Heat Seal Silicone Sheets

United Silicone Heat Seal Silicone Sheet Stock Now Available through ISM

Industrial Specialties Mfg. (ISM) is the master distributor for heat seal silicone sheet stock from United Silicone. Our distribution relationship with United Silicone allows us to provide our customers with these exceptional products just as they are needed.

Metal bonded high temperature heat seal silicone sheets from United Silicone can handle more heat than anything like them in the market. They are engineered to withstand the temperature, pressure and dwell time requirements of heat sealing and packaging tooling applications.

All United Silicone heat seal silicone rubber is compression molded (vertically manufactured). This manufacturing method limits the maximum sheet size to 24”x36”. However, this also provides United Silicone rubber with up to seven times (7x) greater durability than extruded silicone rubber.


Applications
Metal bonded heat seal silicone sheet is useful for applications that benefit from a flexible yet durable non-marring, non-skid material that is thermally conductive and highly heat tolerant. Industries that use them include

  • Rigid Packaging
  • Flexible Packaging
  • Food Packaging
  • Medical Packaging


Industrial uses
Common heat seal industrial uses include

  • Bag Sealing
  • Tray Sealing
  • Rigid Packaging


Common formats

  • Seal Bars
  • Seal Heads


Benefits

  • Thermally Conductive
  • Heat Tolerant to 550°F
  • Rubber Formulation Options
  • 40 to 90 Durometer (Shore A)
  • Excellent Silicone-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


Standard Tolerances

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

 

United Silicone Heat Seal Silicone Sheet Formulations

Ultrasil (red) Heat Seal Silicone SheetsUltrasil heat seal silicone sheet stock is engineered for demanding vertical and peripheral operations requiring high temperatures or high temperatures and high pressures -- typically, manually fed.

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*Visit our interactive catalog to get part numbers and request price quotes or more information.

Ultrasil (red) heat seal silicone 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 heat seal silicone sheet backing options

  • Unbonded
  • Aluminum (1/32” to 1/2")
  • Dead Soft Aluminum (1/16")
  • Stainless Steel (1/16” and 1/8”)
  • Cold Rolled Steel (1/16” and 1/8”)


Thermosil (brown) Heat Seal Silicone SheetsThermosil heat seal silicone sheet stock is engineered for semi-automatic and fully automated sealing applications requiring very stable high temperatures and rapid heat recovery.

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Thermosil (brown) heat seal silicone 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 heat seal silicone sheet backing options

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

FDA (red) Heat Seal Silicone SheetsFDA heat seal silicone sheet stock is FDA (CFR Title 21 Part 177.2600) Food Grade Compliant.

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FDA heat seal silicone 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 heat seal silicone sheet backing options

  • Unbonded
  • Aluminum (1/32” to 1/2")
  • Dead Soft Aluminum (1/16")
  • Stainless Steel (1/16” and 1/8”)
  • Cold Rolled Steel (1/16” and 1/8”)

 

FDA-3A (red) Heat Seal Silicone SheetsFDA-3A heat seal silicone sheet stock is FDA (CFR Title 21 Part 177.2600) Food Grade Compliant and 3-A Sanitary Class 1 Test Specifications Certified.

 

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FDA-3A heat seal silicone 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 heat seal silicone sheet backing options

  • Unbonded
  • Aluminum (1/32” to 1/2")
  • Dead Soft Aluminum (1/16")
  • Stainless Steel (1/16” and 1/8”)
  • Cold Rolled Steel (1/16” and 1/8”)


Other Heat Seal Silicone Sheet Formats

Dead Soft Aluminum Bonded Heat Seal Silicone SheetsDead soft aluminum bonded heat seal silicone sheet stock is molded, precision ground for flatness and shipped flat. It can be bent or shaped on site to match the contour needed for your particular sealing application.

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Dead soft aluminum bonded heat seal silicone 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 heat seal silicone 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 sheetsUnbonded United Silicone rubber sheet stock is durable, high temperature tolerant, flexible and conformable. It has excellent physical properties including high abrasion resistance, good tensile strength, low compression tolerance and high tear properties.

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

These unbonded heat seal silicone 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 silicone rubber sheet stock is via clamping mechanisms instead of adhesives.

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Unbonded heat seal silicone 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 heat seal silicone 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 Sheet
This technical data sheet provides details on the properties of United Silicone’s Ultrasil, Thermosil, FDA and FDA-3A heat seal silicone rubber formulations. These include mechanical as well as other properties.
 


 

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How to Request Pricing and Place an Order
Use this link to find the United Silicone heat seal silicone sheet stock you need in our catalog. Click through until you find the product you want to purchase, then simply click "request quote." 

*Please note: ISM does not offer custom cutting of the metal bonded or unbonded United Silicone heat seal silicone sheet stock offered in our catalog.