High Heat Tolerant Silicone Rubber Sheets

United Silicone Rubber Sheets Now Available through ISM

ISM, Industrial Specialties Manufacturing, is the master distributor of United Silicone high heat tolerant silicone rubber sheets and custom heat seal tooling. Our relationship with United Silicone allows us to provide our customers with these exceptional products just as they are needed.

These rubber-to-metal bonded materials are heat tolerant to 550ºF, 288ºC and outperform most industrial materials currently available. In addition, the silicone gives you the ability to seal through surface variation and contamination.

Engineered for durability, temperature, pressure and dwell time requirements of high temperature, heat seal and packaging applications.

United Silicone rubber materials are vertical compression molded, limiting maximum sheet size to 24" x 36". The advantage of this process is that it provides increased longevity and tighter tolerances compared to extruded silicone rubbers.

Find out what makes United Silicone heat seal tools better.
Watch this short video to find out how United Silicone meets the challenges of silicone-to-metal bonding for high temperature applications like packaging heat seal tooling.

Silicone Rubber Sheet Packaging MarketsUnited Silicone rubber sheets are a flexible yet durable, non-marring, non-skid material. They are also thermally conductive and high heat tolerant (550ºF, 288ºC), making them an excellent material for packaging applications. Packaging markets that use United Silicone rubber sheet materials include:

  • Food
  • Medical
  • Beverage
  • Nutraceuticals
  • Pharmaceutical
  • Pet Food & Pet Care
  • Packaging Prototyping
  • Household & Automotive
  • Healthcare & Personal Care
  • Tobacco & Smoking Products
  • Electronics, Media & Mobile Devices


Silicone Rubber Sheet Packaging ApplicationsTypical industrial packaging heat sealing applications include:

  • Flexible Packaging
  • Spout Pouch Manufacturing
  • Bag and Pouch Manufacturing
  • Cup, Pot, Tray and Tub Sealing
  • Rigid and Semi-Rigid Packaging
  • Pouch and Spouted Pouch Sealing
  • Blister Packs and Blister Pack Sealing


Typical Applications Using Bonded and Unbonded Silicone Rubber Sheet Materials

  • Skin Packing
  • Seal Bars & Jaws
  • End-of-Arm Tooling
  • Gripper Finger Tooling
  • Machine Shop Work Surfaces
  • Vacuum Pads and Pad Applicators
  • Various Injection Molding Applications
  • Specialty High Heat Tolerant Gasketing
  • Part Protection and Cushioning During Assembly

 

United Silicone rubber-to-metal bonded sheets.
Metal bonded silicone rubber sheets

United Silicone Rubber Sheet Benefits

  • Thermally Conductive
  • Rubber Formulation Options
  • 40 to 90 Durometer (Shore A)
  • Heat Tolerant to 550ºF, 288ºC
  • Excellent Silicone Rubber-to-Metal Bond
  • Resistant to Compression Stress
  • Metal Bonded Sheets are Precision Ground for Flatness
  • FDA Food Grade and 3-A Sanitary Certified Material Options

Rubber-to-metal bonded silicone rubber sheets for high temperature applications.

United Silicone Rubber Sheets Standard Tolerances

  • Metal Bonded Silicone Rubber Sheet Thickness: ± 0.010 inches
  • Metal Bonded and Unbonded Silicone Rubber Sheet Length and Width: ± 0.062 inches
  • Metal Bonded and Unbonded Silicone Rubber Sheet Durometer: ± 5 points

Contact us for more information, samples or pricing.

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United Silicone Rubber Sheet Formulations

United Silicone Ultrasil (red) metal bonded silicone rubber sheets.
Ultrasil sheets

Ultrasil (red) Silicone Rubber SheetsUltrasil silicone rubber sheets are engineered for demanding vertical and peripheral operations requiring high temperatures or high temperatures and high pressures -- typically, manually fed.

Visit our interactive catalog to get Ultrasil silicone rubber sheet part numbers, price quotes or more information.
 

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Ultrasil (red) silicone rubber sheet specifications

  • 1/32” to 1/2" rubber thickness
  • 12” x 24” or 24” x 36” standard sheet sizes
  • 40, 50, 60, 70, 80 or 90 Shore A durometer
  • Metal bonded sheets are precision ground for flatness


Ultrasil (red) silicone rubber sheet backing options

  • Unbonded
  • Aluminum (1/32” to 3/4")
  • Dead Soft Aluminum (1/16")
  • Stainless Steel (1/16” and 1/8”)
  • Cold Rolled Steel (1/16” and 1/8”)

 

United Silicone Thermosil (brown) metal bonded silicone rubber sheets.
Thermosil sheets

Thermosil (brown) Silicone Rubber SheetsThermosil heat seal silicone sheets are engineered for semi-automatic and fully automated sealing applications requiring very stable high temperatures and rapid heat recovery.

Visit our interactive catalog to get Thermosil silicone rubber sheet part numbers, price quotes or more information.
 

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Thermosil (brown) silicone rubber sheet specifications

  • 1/32” to 1/2" rubber thickness
  • 12” x 24” or 24” x 36” standard sheet sizes
  • 60, 70, 80 or 90 Shore A durometer
  • Metal bonded sheets are precision ground for flatness

 

Thermosil (brown) silicone rubber sheet backing options

  • Unbonded
  • Aluminum (1/32” to 3/4")
  • Dead Soft Aluminum (1/16")
  • Stainless Steel (1/16” and 1/8”)
  • Cold Rolled Steel (1/16” and 1/8”)
United Silicone FDA metal bonded silicone rubber sheets.
FDA sheets


FDA (red) Silicone Rubber SheetsFDA silicone rubber sheets are FDA (CFR Title 21 Part 177.2600) Food Grade Compliant.

Visit our interactive catalog to get FDA silicone rubber sheet part numbers, price quotes or more information. 
 

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FDA silicone rubber sheet specifications

  • 80 Shore A durometer
  • 1/32” to 1/2" rubber thickness
  • 12” x 24” or 24” x 36” standard sheet sizes
  • Metal bonded sheets are precision ground for flatness


FDA silicone rubber sheet backing options

  • Unbonded
  • Aluminum (1/32” to 3/4")
  • Dead Soft Aluminum (1/16")
  • Stainless Steel (1/16” and 1/8”)
  • Cold Rolled Steel (1/16” and 1/8”)

 

United Silicone FDA-3A metal bonded silicone rubber sheets.
FDA-3A sheets

FDA-3A (red) Silicone Rubber SheetsFDA-3A heat seal silicone sheets are FDA (CFR Title 21 Part 177.2600) Food Grade Compliant and 3-A Sanitary Class 1 Test Specifications Certified.

Visit our interactive catalog to get FDA-3A silicone rubber sheet part numbers, price quotes or more information. 

 

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FDA-3A silicone rubber sheet specifications

  • 60 Shore A durometer
  • 1/32” to 1/2" rubber thickness
  • 12” x 24” or 24” x 36” standard sheet sizes
  • Metal bonded sheets are precision ground for flatness


FDA-3A silicone rubber sheet backing options

  • Unbonded
  • Aluminum (1/32” to 3/4")
  • Dead Soft Aluminum (1/16")
  • Stainless Steel (1/16” and 1/8”)
  • Cold Rolled Steel (1/16” and 1/8”)


Other Silicone Rubber Sheet Formats

United Silicone Ultrasil (red) dead soft aluminum bonded silicone rubber sheets.
Dead Soft Aluminum

Dead Soft Aluminum Rubber-to-Metal Bonded Silicone Rubber SheetsDead soft aluminum bonded heat seal silicone sheets are molded, precision ground for flatness and shipped flat. They can be bent or shaped on-site to match the contour needed for your specific sealing application. 

Visit the Dead Soft Aluminum bonded silicone rubber sheet product page to get part numbers, price quotes or more information.

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Dead soft aluminum bonded silicone rubber sheet specifications

  • Precision ground for flatness
  • Standard metal thickness is 1/16”
  • 12” x 24” or 24” x 36” standard sheet sizes


Dead soft aluminum bonded silicone rubber sheet options

  • 1/32” to 1/2" rubber thickness
  • FDA: 80 Shore A durometer
  • FDA-3A: 60 Shore A durometer
  • Thermosil: 60, 70, 80 or 90 Shore A durometer
  • Ultrasil: 40, 50, 60, 70, 80 or 90 Shore A durometer


Unbonded Silicone Rubber Sheets

United Silicone Ultrasil (red) unbonded silicone rubber sheets.
Unbonded sheets

Unbonded silicone rubber sheets are durable, high temperature tolerant, flexible and conformable. They have excellent excellent physical properties, including high abrasion resistance, good tensile strength, low compression tolerance and high tear properties.

All United Silicone rubber sheets are engineered and compression molded to provide a silicone rubber up to seven times (7x) more durable than extruded silicone rubber.

 

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These unbonded silicone rubber sheets are not surface ground for flatness and have a thickness tolerance of ±0.062 inches (about 1/16" or 1.5mm). The best method for mounting or attaching unbonded heat seal silicone rubber sheet stock is via clamping mechanisms instead of adhesives. 

Visit the Unbonded silicone rubber sheet product page to get part numbers, price quotes or more information.


Unbonded silicone rubber sheet applicationsSuitable for any application that benefits from a flexible yet durable, non-marring, non-skid material. These include but are not limited to

  • Platens
  • Gaskets
  • Gripper Fingers


Unbonded silicone rubber sheet specifications

  • 1/32” to 1/2" rubber thickness
  • 12” x 24” or 24” x 36” standard sheet sizes
  • FDA: 80 Shore A durometer
  • FDA-3A: 60 Shore A durometer
  • Thermosil: 60, 70, 80 or 90 Shore A durometer
  • Ultrasil: 40, 50, 60, 70, 80 or 90 Shore A durometer

 

Technical Data SheetGet the United Silicone rubber sheets technical data sheet. 
This PDF provides details on the properties of United Silicone's Ultrasil, Thermosil, FDA and FDA-3A silicone rubber formulations. This information includes mechanical as well as other properties.
 

Get the data sheet

 

 

 

How to Request Pricing and Place an Order

Visit our interactive catalog to get part numbers, price quotes or find out more.

Contact us now for more information, samples and pricing. 
*Please note: ISM does not offer custom cutting of the metal bonded or unbonded United Silicone rubber sheet stock shown in our catalog.

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More information >>

  • Some Heat Sealing Frequently Asked Questions
    Get some insights into custom heat seal tools and high heat tolerant silicone rubber sheets, plus learn more about the seal jaws, bars and heads used for heat sealing tooling. Flexible, non-marring, thermally conductive silicone can compensate for thick or multiple film layers and provide consistent, reliable, leak-proof seals and low scrap rates.
     
  • Silicone Rubber Sheet Bonding: What You Need to Know
    This blog post explains why it is so difficult to attach silicone rubber to metal heat seal tooling. It goes on to describe United Silicone's solution to this problem. United Silicone rubber-to-metal bonded silicone rubber sheets are thermally conductive, high heat tolerant, durable and resilient. 


Some downloadable resources >>

  • Heat Sealing Frequently Asked Questions
    Have any questions about using high temperature silicone rubber for heat seal tooling such as seal jaws, seal bars and seal heads? Learn how a suitable silicone rubber sheet material can provide a flexible, non-marring, thermally conductive sealing face that compensates for thick or multiple film layers to provide leak-proof seals and low scrap rates.
     
  • Silicone Rubber Rollers Technical Data Sheet
    United Silicone rubber rollers conform readily to surface variations. Ultrasil, Thermosil, FDA and FDA-3A silicone rubbers with aluminum or steel metal cores. Suitable for a variety of high temperature tooling applications. Custom engineered and manufactured to match your application requirements.
     
  • Heat Seal Packaging Solutions Technical Data Sheet
    United Silicone offers a complete line of heat seal tooling for flexible packaging: silicone rubber sheets, seal heads, tooling and rollers. Ultrasil, Thermosil, FDA, and FDA-3A silicone rubbers withstand temperatures, pressures and dwell times required for high temperature heat sealing and packaging tooling.
     
  • Heat Seal Silicone Rubber Sheets Technical Data Sheet
    A datasheet for United Silicone's unbonded and metal bonded high heat tolerant silicone rubber materials. This data sheet lists the various formulations with their mechanical properties and stock specifications: Ultrasil, Thermosil, FDA and FDA-3A silicone rubbers.
     
  • Heat Seal Teflon Bonded Silicone Technical Data Sheet
    Teflon™ (PTFE) bonded silicone rubber provides you with an alternative to wrapping silicone heat seal tools with Teflon™ tape. Robustly designed, it lasts 10x longer. Get the solution you need for packaging inconsistencies caused by food contamination, thick or multiple layers of film, product dust or fine particles.