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Could Ceramic Insulation Paper Solve Your Temperature Woes?

Ceramic Fibre Paper Glass; Thermal Insulation;

One of the main problems generally encountered when searching for a high temperature insulation material is that in order to withstand elevated temperatures, a trade-off is usually made with mechanical strength resulting in materials that are brittle, porous, fibrous and generally difficult to handle. If these properties are what are causing trouble in your high temperature insulation application, then you may want to read on and find out more about AG’s Lytherm Ceramic Insulation Paper.

Really, a heat resistant paper?

We know it sounds strange but Lytherm isn’t your normal paper manufactured from organic tree wood. It’s actually manufactured from high purity alumina-silicate fibres. These are ceramic-based inorganic fibres that are often used as a refractory material in many high temperature industrial applications and processes where temperatures reach over 1000ºC.

The fibres are washed and spun in a special process to remove foreign particles and to control the content of unfiberized shot. The resulting product is a thin, white sheet material that is lightweight but strong.

Lytherm Ceramic Insulation Paper Close-Up

 

What are the advantages of ceramic fiber paper?

Ceramic Insulation Papers offer many advantages over other forms of insulation. They are thin, flexible and lightweight while still able to remain extremely stable and easy to handle. Lytherm is so stable that even when exposed to water, steam or oil it will return to its original thermal and physical properties upon drying!

Lytherm also exhibits extremely low thermal conductivity and heat storage. This makes it particularly useful for heat containment in tight places or where a uniform thickness material is required. It is also resistant to a wide range of chemicals meaning it can be used in a diverse range of applications.

Other benefits include:

♦ Excellent compression recovery (very important for sealing).
♦ Good dielectric strength.
♦ Low heat storage.
♦ Very little shrinkage. Even at extreme temperatures.

Best of all it can be cut into shapes, wrapped, formed or slit into rolls without falling to pieces. This means you can achieve the exact shape of insulator that you require.

Lytherm Cermic Fiber Paper Compressed

 

Where is ceramic insulation paper typically used?

Ceramic insulation papers are mainly used as lining materials, for high temperature seals, primary insulation or as a filler. Within these broad descriptions, there’s a lot of specific uses. Just some of them include:

♦ Lining of doors and walls for furnaces and kilns.
♦ Insulation for wood-fired pizza ovens.
♦ Lining and insulation for glass making.
♦ Making high temperature gaskets and seals.
♦ Insulation around engines and exhaust systems in the marine and automotive sectors.
♦ Pump insulation.
♦ As a filler for insulation batts and blankets.

These really are just some of the countless applications we’ve seen for Lytherm ceramic paper over the years. If you think Lytherm might be suitable for your application, it’s worth speaking to one of our experienced customer service team members. They’ll be happy to help with information on sizes, fabrication options and anything else you need to know.

Ceramic Fibre Paper Glass

Is there anything to be aware of?

Most grades of Lytherm Ceramic Insulation Paper contain a low percentage of organic binder that may burn off when initially exposed to elevated temperatures. In most applications, this should not be a concern – merely something to be aware of.

In applications where this could be an issue, AG can also supply a completely inorganic binderless grade. This specialised type is able to handle temperatures up to 1650ºC whereas the standard grade is rated to a (still fairly impressive) 1260°C.

To find out more about this product including what thicknesses and sizes are available we suggest heading over to the product page on our website where you will be able to find all the technical data. Alternatively, to learn more about all the fabrication options we offer for our Lytherm paper, you can get the details of your local AG branch here.






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New Video on our Flange Spray Shields for Plant and Personnel Protection

Leaking Flange with Spray

AG’s Flange Spray Shields are safety devices that are designed to prevent hot, caustic or toxic chemicals from making contact with plant equipment or personnel and causing injury or harm. They wrap around the flange, effectively stopping wayward spray that can occur in the event of a gasket leak or blow-out.

If your workplace is serious about preventing accidents at work, then the use of flange spray shields is a must. To find out more about these simple to install, effective and long lasting safety guards watch the video below….

 

Vinyl Flange Spray Shields

Our Vinyl Flange Safety Spray Shields are made from a yellow re-enforced polyvinyl chloride fabric. Fabricated with 3-Ply multi layers and utilizing a tough polyester thread and draw cords. They have a maximum operating temperature of 76ºC and are UV stabilised whilst being resilient against the external elements such as rain, emissions and sunlight.

Each cover comes with a pre-installed bleed hole that is covered by a PH indicator, providing easy identification as to if a leak is present. This patch is replaceable meaning that the spray shield is suitable for use again, if it has been exchanged. They are available in ANSI, DIN and PN flange sizes and are easily installed by a single person whilst at the same time ensuring that the safety of others is kept. Use of our Spray Shields also assist organisations meet new regulations set by agencies such as OSHA, EPA, MSHA, SOLAS, ABS and DNV.

PTFE Flange Spray Shields

AG’s PTFE Flange Spray Shields are manufactured with a high quality PTFE coated fibreglass cloth and an easy-view PTFE central strip. Fabricated utilising either a PTFE coated fibreglass or Nomex® thread and draw cords, they have a maximum operating temperature of 204ºC. The Spray Shields are UV stabilised and are resilient against the external elements such as rain, various emissions and sunlight.

Our PTFE Spray Shield’s come complete with a clear PTFE centre section that allows for easy visual identification of any leaks whilst simultaneously offering some resistance against contact with aggressive chemicals. These also have the added benefit of being fire and tear resistant. They are available in ANSI, DIN and PN flange sizes and are easily installed by a single person whilst at the same time ensuring that the safety of others is kept. Use of our Spray Shields also assist organisations meet new regulations set by agencies such as OSHA, EPA, MSHA, SOLAS, ABS and DNV.

Custom Fabricated Flange Spray Shields

In addition to our standard range of sizes, AG can also produce custom made flange spray shields for non-standard flanges or extremely demanding conditions.

Our comprehensive range of raw materials enables us to offer the exact combination of materials required while our in-house fabrication facilities means that your custom made solution can be fabricated quickly and precisely

Individual elements of the shield (such as the cord) can be strengthened where required or the whole item can be customised to suit your needs. For more information on the options available please contact your local AG branch.






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Super-Tack – Fast, Strong Adhesive Demonstrated in our New Video

Weicon Flex 310 M Super-Tack is a fast, strong adhesive sealant. Made from MS Polymers, it is completely free of silicone and works well on most materials including metal, ceramics, wood, glass, stone and many types of plastic.

It’s real claim to fame though is its very high initial bond strength. Super-Tack has a skin-over time of just 10 minutes but it’s adhesive effect is almost instant. This makes it ideal for bonding vertical surfaces and allows it to be used to replace screws, pegs, rivets and other traditional types of fastener.

The video below shows just how easy it is to use and then puts it to the test by having it support the towing of a car.

 

Weicon Flex 310 M Super-Tack High Strength, Fast Working Adhesives in White and Grey

 

Flex 310 M Super-Tack is available from Associated Gaskets in White or Grey colours. This fast, strong adhesive sealant is very long lasting and remains elastic. Bonds made with Super-Tack will withstand up to 20% joint movement while the cured adhesive itself has a elongation at break of 600% (which is similar to fully cured silicone rubber sheet). For more technical information, please see the table below or, to discuss if this is the right high strength adhesive for you please contact your local Associated Gaskets branch.

Flex 310 M Super-Tack Performance Summary

Basis MS Polymer
Colours White or Grey
Viscosity Pasty
Skin Over Time 10 Minutes
Max. Gap Filling Depth 10mm
Max. Gap Filling Width 30mm
Shore Hardness A 50
Elongation at Break 600%
Average Tensile Shear Strength 1.5 N/mm²
Tear Strength 13 N/mm²
Max Movement Capacity 20%
Temperature Rating -40°C to +90°C

For more detailed information on our Weicon Super-Tack adhesive, please see the dedicated technical data sheet located on the product page.






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New Video for our Elmotherm Air Dry Varnish

Elmotherm Air Dry Varnish Spray and Liquid (200px Square)

Because of its outstanding electrical properties, smooth surface finish and reliable performance, Elmotherm Air Dry Varnish has become exceptionally popular throughout the electrical industry. Available in easy to use spray cans as well as bulk liquid containers, this alkyd resin based varnish is widely used for a range of surface coating tasks including coating insulating boards and painting exposed metal and motor casings.

Manufactured by Elantas, Elmotherm Air Dry Varnish is available in Red, Black, Grey, Clear and White as standard (the white is available as a liquid only). It has proven to be an excellent alternative to the old Isonel 300 Spray and is used in applications up to Class H (180°C).

To further demonstrate the large range of applications for this very high quality spray-on varnish, we put together this video. It details a few more of the uses for this varnish as well as giving you a bit more of an idea about the surface finish that can be achieved.

Available Sizes and Colours of Elmotherm Air Dry Varnish.

Associated Gaskets is pleased to offer our Air Dry Varnish in a selection of sizes and colours. We carry very large stocks of all of these and are usually able to offer fast delivery to meet your requirements. The table below details that standard range. For custom requirements, or to learn more about this or any other product in our expanding range of electrical varnishes and resins, please do not hesitate to contact your local Associated Gaskets branch.

Grade

Colour

400gm Aerosols

5KG Tins

20KG Drums

Elmotherm VA00

Clear

Elmotherm VA39

Grey

Elmotherm VA42

Red

Elmotherm VA63

Black

Elmotherm VA643

White

N/A






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Our New Sydney Sales Manager

Associated Gaskets Logo (200px)

Associated Gaskets is very pleased to welcome Tim Dominguez to our team. Tim is joining us as our new Sydney sales manager and brings with him a real wealth of experience and a proven track record of providing great service that we think will serve him very well here at AG.

Unfortunately, Tim’s hiring did come about because of a departure; Paul Zanus has now left Associated Gaskets after 23+ years. Many of you may know Paul from his time in his most recent role as National Sales Manager which he served in for the last 5 years. Before that he held a number of different positions and his knowledge, passion and commitment will be surely missed. We’d like to take this opportunity to once again thank Paul for everything he has done over the years and wish him all the very best as he takes on a new challenge in the construction industry.

While it is always a little sad for us to see someone go, we are very happy to be able to welcome Tim aboard. Many of you in Sydney will likely hear from him in the coming months. In the meantime, Tim’s contact details are now published on our Sydney contact information page for anyone who would like to get in touch.






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Top-Sticks, Slot-Sticks or Preformed Slot Wedges

Nomex and DMD Slot Wedges, Top Sticks and Slot Sticks at Associated Gaskets

Half used bundles of Preformed Slot Wedges are a common sight in any motor rewinding workshop. Sometimes known as top-sticks, slot-sticks or simply as wedges, these are a popular choice for filling slot voids in smaller types of electric motors that don’t require a machined epoxy, polyester or magnetic solution.

Throughout our decades of experience working with the electric motor rewinding industry, Associated Gaskets has learned that there’s one key feature that matters above all else when it comes to these wedges; having them when you need them. To help, we’ve committed to holding each type in our range of preformed slot wedges in stock in a range of sizes.

This page breaks down the differences between each of the 3-main materials stock by AG and provides a brief overview of what each is used for. Whether you require curved or square Nomex wedges, 180°C rated DMD or good old-fashioned wood slot sticks for your repair job, we’ve got you covered.

Preformed Slot Wedges Made from Nomex

Preformed Slot Wedges made from Nomex (Square and Round) Wedges Only

♦ Manufactured from genuine, DuPont Nomex™

♦ Suitable for use in high temperature electrical applications up to 220°C

♦ Available in either 0.020″ or 0.030″ thick, round or square and a huge selection of sizes.

♦ Supplied in 914mm lengths. 250 Feet (76 Metres approx.) per pack.

AG’s Preformed Slot Wedges made from Nomex® combine convenience with reliable, long lasting performance. Available in a wide range of sizes, these wedges are pressure formed so that they retain their designed shape without exhibiting any of Nomex’s® usual tendency to “spring back”.

Preformed Slot Wedges Made from DMD

DMD Preformed Slot Wedges for Class H Electric Motors

♦ Manufactured from premium grade DMD and are able to be used in Class H (180°C) electrical applications.

♦ Available in a large selection of sizes (including both square and round type wedges).

♦ Good physical characteristics including strength and shape retention for easy fitting.

♦ Supplied in 914mm lengths. 250 Feet (76 Metres approx.) per pack.

Preformed Slot Wedges made from Premium DMD are economical, convenient and reliable insulation options for the slots of low and medium voltage electric motors. Unlike most grades of DMD on the market, Associated Gaskets’ premium grade of DMD, from which these wedges are formed, is able to withstand the rigours of Class H, or 180ºC, electrical applications.

Wooden Slot Sticks

Wooden Slot Sticks for low voltage electric motors

♦ Extremely Economical

♦ Available in a selection of sizes (all half-round).

♦ 3.2mm Wide to 12.7mm Wide available as standard.

♦ Each stick is 600mm long. 100mtrs worth per pack.

AG’s Wooden Slot Sticks are highly economical, pre-fabricated sticks available in a range of sizes to suit different slot dimensions. Used in the electric motor rewind and repair industries on low voltage machines, these sticks are inserted into the slots to secure the copper conductor. Our DMD wedges are all 0.020″ thick as standard.

HAVE YOU SEEN THE REST OF OUR RANGE OF ELECTRICAL INSULATION AND CONDUCTORS?

AG stocks, fabricates and customises a huge range of solutions for electrical applications. This includes a variety of tapes, rigid insulation materials, varnishes, compounds, sleevings and much, much more. Contact Us today for more information on how we can assist.






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Sealon PTFE Gasket Tape Demonstrated In Our New Video

Sealon PTFE Gasket Tape is an incredibly versatile product. Made from expanded PTFE (AKA Teflon), Sealon replaces conventional gaskets and can be applied directly to the flange face. It’s a simple, fast, and permanent alternative to using a cut-gasket and is versatile enough to cover many different sealing applications.

One of the things we’ve come across over the years though is the misconception that it would be hard to install. After all, a tape replacing a gasket; there has to be some trick to it right? Not really. You definitely need to ensure that Sealon is ok for your application (pressure, temperature, medium, compression all continue to play a part) but apart from that it’s really quite simple.

Sealon PTFE Instant Gasket Tape from Associated Gaskets Australia

Rather than try to explain in words how easy it is to seal a flange with Sealon, we decided the best thing we could do is to show it. To do this, we’ve put together the video below.

Every roll of Sealon is produced for pure PTFE which allows it to offer exceptional chemical resistance. In fact, it’s resistant to most chemicals with the exceptions of elemental fluorine and molten alkali metals. It’s also DVGW rated for use in sealing gas and meets FDA requirements for food application. A variant (without the adhesive backing) is also available for oxygen sealing (BAM approved).

Sealon withstands anything between -232°C and +315°C and is soft enough to compress at minimal torque.

Sealon PTFE Gasket Tape Sizes

Width (Metric) Width (Imperial) Length
3mm 1/8″ 30 Metres
5mm 3/16″ 20 Metres
7mm 1/4″ 15 Metres
10mm 3/8″ 8 Metres
14mm 1/2″ 5 Metres
17mm 5/8″ 5 Metres
20mm 3/4″ 5 Metres
25mm 1″ 5 Metres
Sealon Expanded PTFE Gasket Tape at Associated Gaskets Australia

More Information

If you’d like more information on our Sealon PTFE Gasket Tape please do not hesitate to contact your local Associated Gaskets. Our team has worked with Sealon for years and are ready to help in determining its suitability or the size you need for your application. We also have a product page dedicated solely to this versatile gasket material.

We really hope you enjoyed this video. We’re going to keep making these as a way of showing how many of our products work and the problems they can solve. If you’d like to stay up to date with all our latest releases we really so recommend subscribing to our monthly newsletter. We’ll never annoy you more than once a month and each issue will be packed with new resources and value. Signing up is free and easy and can be completed via the following form.

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Christmas Holiday Trading Hours

christmas-thumb

AG will remain open throughout the Christmas and New Year period, only closing on the public holidays. Our branches also remain open during this time, so should you require any goods or have an emergency break down over this period we will be on hand to help.

We would like to wish all of our customers a safe and happy festive season and a prosperous new year in 2017!






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Everything you need to know about Bakelite

‘Bakelite’ is a name that is commonly used to refer to a family of fully synthetic plastics that were first invented by Leo Baekeland back in 1907. The common feature with all these materials is that they are formed by a condensation reaction of phenol with formaldehyde resulting in a thermosetting resin which is then mixed with a variety of filler materials and cured. Due to the range of fillers available, there are several varieties of Bakelite’s on the market each with their own unique properties. Generally though, all types and styles have good mechanical strength are resistant to elevated temperatures and provide good insulation against electrical current.

Synthetic Resin Bonded Fabric (SRBF)

Fabric Bakelite

srpf-edited-900x900

SRBF, otherwise known as fabric Bakelite employs layers of cotton cloth as a filler which gives the material increased mechanical strength. It can also handle higher temperatures than other available grades and is offered in both natural brown (SRBF-N) and black (SRBF-B) colour options.

Click here to find out more

Synthetic Resin Bonded Paper (SRBP)

Paper Bakelite

srbp-edited-900x900

SRBP is also referred to as paper Bakelite due to it’s filler material which is a paper or pulp type material. This economical grade can be used in applications where temperatures reach up to 115ºC and provides good insulation from electrical current. SRBP is also available from AG in a natural brown colour (SRBP-N) or in black (SRBP-B)

Click here to find out more

Bakelite Tube, Rod and Pultrusions

SRBF Tube, Rod & Section

AG also stocks both SRBF and SRBP Bakelite in tube and rod form. Available in a range of different sizes, these tubes can also be easily machined to form long lasting isolating sleeves, washers, bushes, spaces or line guides.

Click here to find out more about SRBF Rod
Click here to find out more about SRBF Tube
Click here to find out more about SRBP Tube

Custom Fabricated Bakelite Parts

custom-fabricated-bakelite-components

AG’s production staff have enormous experience producing custom fabricated components. Not only do we have the machinery and facilities to do the job, we can reproduce custom parts from a sample or develop a prototype right from scratch.

Get in contact with us to find out how we can help you.

 

Want to learn more?

Bakelite is just one of the many types of rigid insulation materials we stock here at AG. Like our Bakelite sheet, many of these can be supplied in various forms or cut / machined to suit your required.

For more information about the available types, styles and sizes, or to discuss whether this economical and versatile material will be suitable for your application, please contact your local Associated Gaskets.






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7 Things to Consider When Choosing a Type of Rubber Sheet

Rubber Elastomers

No matter what your intended application, choosing the correct style of rubber sheet material will help you achieve the longest functional life of the application and mitigate any issues that could arise during its operation. This article explains the 7 main factors that should be considered in order to guide your choice. We have also put together a quick reference chart detailing 8 of the most common rubber types on the market that cover the majority of applications you may come across. But first, a little about the history of rubber.

The invention of the first useful rubber compound is credited to Charles Goodyear who experimented with mixing natural rubber with Sulphur. Even today companies continue to mix chemicals with rubber to further improve its performance and achieve specifically desired characteristics (such as increasing its maximum operating temperature or resistance to particular chemical combinations). This has lead to a wide variety of rubber styles on the market causing headaches for anybody with little experience buying rubber sheet or looking for fast answers on what’s best for their application. Hence, we put together this guide.

1. Thickness

One of the first considerations that you should make when choosing a rubber sheet is how thick the rubber needs to be. This is especially important when choosing rubber for gasket and sealing applications, however since it will also need to be considered in every other application at some point, it is a good place to start. Thickness requirement can also play a part in narrowing down the range of alternatives available as not all varieties of rubber are readily available in all thicknesses and some may require special ordering. For example, if your application requires a rubber thicker than 12.7mm, the list of rubbers that are readily available is much more limited.

2. Temperature

Another very important factor is the temperature that your rubber will be exposed to. It is important that you consider both the upper and lower limit as these vary between rubbers. If exposed to conditions where temperatures exceed the rubbers maximum rating it will become sticky and ultimately melt and burn up. If exposed to temperatures lower than its minimum it will begin to become more solid, making it brittle and prone to cracking. Some rubbers handle temperature better than others, for example Silicone Rubber can handle constant temperatures between -70ºC and 200ºC making it a popular choice in many extreme temperature environments.

Custom Fabricated Red Silicone Rubber Seals
High Temperature Red Silicone Seals

 

3. Abrasion Resistance

Not all formulations of rubber offer the same level of resilience against abrasion. The abrasion resistance of a rubber refers to its ability to resist mechanical action such as rubbing, scraping or erosion that ultimately results in the removal of material from the rubbers surface. In applications where this is a critical factor, the best choice of rubber would be an Abrasion Resistant Red Rubber, which is sometimes referred to by the brand names Chutex® or Linatex®, designed for the harsh abrasive conditions associated with ore and slurry chutes on mine sites. Natural Rubber Insertion is another popular option as an abrasion resistant rubber offering good durability for an affordable price.

4. Ozone / UV Resistance

Exposure to Ultra-violet (UV) rays and ozone is detrimental to many types of rubber including natural rubber, nitrile rubber and other rubbers where double bonds form a majority of their polymer chain. When these rubbers are exposed to the elements for extended periods, they break down and experience occurrences such as stress corrosion or ozone cracking. Consideration should be taken to only use UV / Ozone resistant rubbers in these cases, the best being Viton, silicone or EPDM. It is especially important to consider ozone and UV resistance in critical service applications such as gaskets as breakdown can begin to occur even in environments where ozone is less than 1 part per million (i.e. not much!).


Ozone Cracking on rubber sealOzone Cracking on Rubber Seal

 

5. Oil Resistance

Although a resistance to oil may only be required in some applications, it is generally a very important factor to consider. Most common rubbers on the market will be attacked by oil. This is because natural rubber (the basis of many types of rubbers) is attacked by hydrocarbons leading to severe degradation. Nitrile rubber was developed specifically to withstand oil. It incorporates an acrylonitrile polymer to specifically provide resistance to hydrocarbon based oils, greases and solvents. Nitrile has far greater hydrocarbon resistance than Neoprene and has far superior resistance than natural rubber. Nitrile is also resistant to some synthetic based oils, greases and solvents. Viton® is another rubber that has an excellent resistance to a wide variety of oils and also has a higher temperature rating.

6. Acid Resistance

The pH scale is a measure of the hydrogen ion concentration in a solution. It is used to determine how acidic or basic (alkaline) a solution is. Almost all rubbers are attacked by acids, however some stand up better than others. Acid resistance is another consideration that may not be relevant in all applications, however it pays to consider it. We need to remember that almost all solutions that the rubber will come in contact with will lie somewhere on the pH scale and over time, even low levels of acidity can affect some rubbers. If the rubber in your intended application will be exposed to highly acidic solutions, some rubbers like Viton® offer resistance to a wide range of acidic chemicals, however not all, such as in the case of acetones and ethyl ethers. We recommend that you seek specific advice from experienced technical personnel in this instance.

7. Hardness

The final consideration to make when selecting a rubber is the hardness. This is often referred to as the shore durometer or “duro” of the rubber, named after Albert F. Shore the man who defined it. Some rubbers such as Natural Rubber Insertion are only available in a small range of durometers, whereas others such as silicone are more readily able to be produced in a wider range of hardness’s. Hardness will generally need to be considered in most applications, especially sealing applications where hardness can affect compression and pressure.

durometer-tester
A durometer guage for measuring the hardness of rubber parts and sheets

 

Reaching a Final Decision on a Rubber Sheet

In many cases you may find it difficult to find a rubber sheet that perfectly fits all of the criteria that your application requires. In this case, we advise that you determine which of these 7 factors contribute the most to your application. For instance, a person who is looking to purchase some rubber sheet to protect and line the steel tray of his truck or utility vehicle would likely weigh Abrasion Resistance, UV / Ozone Resistance and Thickness above the other factors as these are the ones that will have most impact on the rubber in that particular application.

To help you compare the grades of rubber available we have put together this chart that tables some specific technical and performance characteristics of the 8 most popular rubber sheet varieties on the market. The table also includes some extra information such as pros and cons and some examples of the applications that each are use generally used for.

Click here to open the Sheet Rubber Selection Chart

Associated Gaskets carries large amounts of stock of all the rubbers explained in this article and included in the table (plus many, many more). We can supply it in roll form, by the metre or converted into cut components such as gaskets, strips or tape. To speak to one of our experienced rubber customer service representatives, find the details of your nearest AG branch by clicking here.






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