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Experts in Silicone Gasket Solutions
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Data Sheets

Gasket Tape / Strip Gasket

What is gasket tape?

Stockwell Elastomerics pre-manufactures master logs (e.g. 36″ wide x 20′ long rolls) of adhesive backed open cell foams and closed cell sponges. These master logs are ready to be slit-to-width (to customer’s defined width), most materials offered can be slit from 1/4″ (6.4mm) up to 34″ (863mm) wide. This pre-manufacturing process allows for quick turns to meet short deadlines. The length of the gasket tape / strip gasket depends on the specific product (see charts below). Each product listed below offers a unique solution to gasketing and sealing requirements.

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Request the Free Gasket Tape Touch Brochure

Request a free “touch” brochure with small samples of gasket tapes to touch and feel. The touch samples included are:

  • 480S Gasket Tape
  • Strip-N-Stick® 100S
  • Strip-N-Stick® 200A
  • HT-800 Gasket Tape
  • Strip-N-Stick® 300AR
  • 400FR (flame retardant) Gasket Tape
  • Strip-N-Stick® 512

Gasket tape sample rolls are also available along with the tactile brochure.

Request Brochure

Gasket Tape Whitepaper CoverFree Whitepaper

Gasket Tape – Silicone Sponge and Silicone Foam for Long Term Sealing Performance (PDF for immediate download)

This gasket tape whitepaper discusses silicone product options that will last and perform for the entire anticipated life of the electrical equipment including those installed in outdoor conditions in the harshest environments.

View / Download Whitepaper

Foam Gasket Tapes

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HT-800 Gasket Tape – Medium Firmness, Closed Cell Silicone Foam with Acrylic Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.032Gray20HT-800 Medium256M Film Supported Acrylic-40°F to +200°FStock– Silicone foam strip gasket
– UL gasket tape
– Water gasket
– Dust gasket
– UV resistant / outdoor gasket
– HT-800 foam is listed for:
UL 94V-0, UL 50, UL 50E, UL 508, UL 1570, UL 1572, UL 157
– Meets FAR 25.853
0.062Gray30Stock
0.093Black30Stock
0.125Black or Gray20Stock
0.188Gray20Stock
0.250Gray20Stock
0.375Gray10Stock
0.500Gray10Stock
0.125Gray203M 9675 Transfer Film Acrylic-40°F to +300°FStock
0.188Gray20Stock
0.250Gray20Stock
0.375Gray20Stock
0.500Gray10Stock
Modified closed cell silicone foam gasket tape. This silicone foam tape offers excellent long term rebound for critical sealing applications such as indoor or outdoor enclosure gaskets needing to meet NEMA and IP standards. HT-800 silicone foam is UL listed for flame (UL 94V-0) and for several gasket applications including UL 50 and UL 50E periodic recompression.

HT-800 Gasket Tape – Medium, Closed Cell Silicone Foam with DP-1001 High Temp Silicone Adhesive with Polyimide Film Support

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.125Red15HT-800 MediumDP-1001-40°F to +450°F*Made to Order– Used to seal outdoor enclosures, lighting, and equipment subject to temperature extremes.
– Silicone foam strip gasket
– UV resistant / outdoor gasket
– HT-800 foam is listed for:
UL 94V-0, UL 50, UL 50E, UL 508, UL 1570, UL 1572, UL 157
– Meets FAR 25.853
0.250Red15
*Made to Order Foam, Sponge and Adhesive Combinations are generally available in 2 weeks. 34” minimum usage applies.
Modified closed cell silicone foam tape offers excellent long term memory. DP-1001 polyimide film supported silicone pressure sensitive adhesive (PSA) has optimum high temperature performance (good to 450°F) and a longer shelf life than most silicone adhesives. Film support prevents stretching.

HT-870 Gasket Tape – Soft Firmness, Silicone Foam with Acrylic Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.125Black20HT-870 Soft Foam256M Acrylic Film Supported-40°F to +200°FStock– Silicone foam strip gasket
– UL gasket tape
– Dust gasket
– UV resistant / outdoor gasket
– HT-870 foam is listed for:
UL 94V-0, UL 50, UL 50E, UL 508, UL 1570, UL 1572, UL 157, UL 197
– Meets FAR 25.853
0.188Made to Order*
0.250Made to Order*
0.2503M 9675-40°F to +300°FStock
0.375Stock
0.50010Made to Order*
*Made to Order Foam, Sponge and Adhesive Combinations are generally available in 2 weeks. 34” minimum usage applies.
Soft silicone foam gasket tape. This soft open cell silicone foam has a fine pitched cell structure making it good for dust seal and light water sealing. HT-870 has excellent rebound, is UV resistant, and is UL listed for several gasket applications. The softness of this strip gasket allows for good compression with lower clamping force. Testing for suitability in wet applications is recommended due to the open cells.

Strip-N-Stick 512 Gasket Tape – Very Soft, Open Cell Silicone Foam with Acrylic Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.125Gray30F-12 Very SoftSupported Acrylic-40°F to +300°FStock– Soft strip gasket
– Silicone foam gasket tape
– Supported acrylic adhesive
– Dust gasket
– Cushioning tape
– F-12 foam is listed for: UL 94V-0
– Meets FAR 25.853
0.25015
Very soft silicone foam gasket tape. This very soft open cell silicone foam is good for dust seals, and cushioning, light water mist sealing. SNS 512 has excellent rebound and is UV resistant. The softness of this strip gasket allows for good compression with low clamping force. Testing for suitability in wet applications is recommended due to the open cells.

BF-1000 Gasket Tape – Extra Soft, Silicone Foam with Acrylic Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.062White20BF-1000 Extra Soft256M Acrylic Film Supported-55°F to +200°FStock– UV resistant
– Often used as cushioning tape, air plenum gaskets, or dust gaskets
– UL 94V-0 and UL 94HF-1 rated
– Meets BMS 1-68
0.125
0.188
0.250
0.37510*Made to Order
0.500
*Made to Order Foam, Sponge and Adhesive Combinations are generally available in 2 weeks. 34” minimum usage applies.
Great for gaskets and applications requiring a very soft, flame retardant, gap filling gasket material.

BF-1000 Gasket Tape – Extra Soft, Silicone Foam with DP-1001 High Temp Silicone Adhesive with Polyimide Film Support

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.188White15BF-1000 Extra SoftDP-1001 Film Supported High Temp-40°F to +450°F*Made to Order– UV resistant
– Gaskets and applications requiring a very soft, flame retardant, gap filling gasket material.
– Adhesive backing is good to 450°F
– Often used as dust gaskets
– UL 94V-0 and UL 94HF-1 rated
– Meets BMS 1-68
0.25010
0.375
0.500
0.625
Excellent memory and low stress relaxation makes this easily deflected cellular silicone a good choice for air plenum gaskets and cushioning tape.
*Made to Order Foam, Sponge and Adhesive Combinations are generally available in 2 weeks. 34” minimum usage applies.

BF-2000 Gasket Tape – Ultra Soft, Silicone Foam with LSE Acrylic Adhesive for Bonding to Powder Coat Surfaces

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.125Black30BF-2000 Ultra Soft3M 9490LE Acrylic Film Supported-55°F to +225°F*Made to Order– UV resistant
– Often used as cushioning tape, air plenum gaskets, or dust gaskets
– UL 94V-0 and UL 94HF-1 rated
– Meets BMS 1-68
0.25020
0.37510
0.50010
Softest silicone foam available, open cell structure, for filling gaps in enclosures where 70% and greater deflection may be needed.
*Made to Order Foam, Sponge and Adhesive Combinations are generally available in 2 weeks. 34” minimum usage applies.

Sponge Gasket Tapes

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Strip-N-Stick 200A Gasket Tape – Medium Firmness, Closed Cell Silicone Sponge with Acrylic Adhesive

Available Thickness (inches)Color(linear feet)SpongeAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.062Orange / Tan30R10470M MediumAcrylic Transfer-20°F to +300°FStock– Silicone sponge strip gasket
– Silicone sponge gasket tape
– Unsupported acrylic adhesive
– Water gasket
– Dust gasket
– UV resistant / outdoor gasket
– Long service life
0.093
0.125
0.18815
0.250
Closed cell silicone sponge gasket tape. This silicone sponge is Saint-Gobain’s medium firmness R10470M with an unsupported (transfer) acrylic pressure sensitive adhesive (PSA). SNS 200A gasket tape is good for water sealing and dust sealing (e.g. NEMA and IP), where the operating temperatures are not extreme. This long life silicone sponge gasket tape has excellent long term rebound and is UV resistant. The strong acrylic adhesive backing is well suited for bonding to high, medium and some low surface energy substrates.

R10470M Gasket Tape – Medium, Closed Cell Silicone Sponge with DP-1001 High Temp Silicone Adhesive with Polyimide Film Support

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.125Orange15R10470M MediumDP-1001-40°F to +450°F*Made to Order– Closed cell silicone sponge tape has excellent long term rebound
– UV resistant
– DP-1001 film supported silicone adhesive has a longer shelf life than most silicone adhesives
– Film support prevents stretching, good to 450°F.
0.250
R10470M sponge with DP-1001 film supported high temp adhesive.
*Made to Order Foam, Sponge and Adhesive Combinations are generally available in 2 weeks. 34” minimum usage applies.

480S Gasket Tape – Soft Firmness, Closed Cell Silicone Sponge with Acrylic Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.125Black30R10480S SoftAcrylic Transfer-40°F to +300°FStock– Soft, requires low clamp force
– Closed cell – no wicking through material
– Low compression set – rebounds very well
– UL 50E silicone sponge
– UL 746C adhesive
– UV and ozone resistant
– Long service life
0.125Red
0.188Red15
0.250Black
0.250Red
Soft closed cell silicone sponge gasket tape uses a UL 50E rated silicone with a strong acrylic adhesive backing. Stockwell Elastomerics’ 480S Gasket Tape is made from Saint-Gobain’s soft, low compression set R10480S, making it easy to compress while limiting door or housing flex. 480S gasket tape is good for water sealing and dust sealing (e.g. NEMA, IP6X and UL 50E); common applications include NEMA enclosure gasket, digital signage gaskets, and electric sign gaskets. This long life, silicone sponge gasket tape has excellent long term rebound and is UV resistant. The strong acrylic adhesive backing is well suited for bonding to high, medium and some low surface energy substrates.

Strip-N-Stick 100S Gasket Tape – Medium Firmness, Closed Cell Silicone Sponge with Silicone Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.062Orange / Tan30R10470M MediumSilicone Transfer-100°F to +500°FStock– Silicone sponge strip gasket
– High temp gasket tape
– Low temp gasket tape
– Unsupported silicone adhesive
– Water gasket
– Dust gasket
– UL rated for lighting fixtures
– UV resistant / outdoor gasket
– Long Service Life
0.093
0.125
0.18815
Closed cell silicone sponge gasket tape. The base silicone sponge is Saint-Gobain’s medium firmness R10470M with an unsupported (transfer) silicone pressure sensitive adhesive (PSA). SNS 100S gasket tape is good for water seals and dust seals (e.g. NEMA and IP), especially where there are wide operating temperatures. This silicone sponge gasket tape has excellent rebound, is UL listed for gasketing in lighting fixtures, and UV resistant. The Low/Medium strength adhesive backing is well suited for extreme temperatures. Silicone sponge is tougher than silicone foam.

400FR Gasket Tape – Flame Retardant, Medium Firmness, UL 94V-0, Closed Cell Silicone Sponge with Acrylic Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.062Blue/Gray30R10400M Medium3M 9485PC Acrylic Transfer-20°F to +300°FStock– Flame retardant silicone sponge gasket gape
– Unsupported acrylic adhesive
– High adhesion
– Water gasket and dust gasket
– UV resistant / outdoor gasket
– Sponge is UL 94V-0 listed
– Dielectric strength (200 V/mil)
– Long service life
0.09315
0.12530
0.25015
Medium firmness, R10400M flame retardant silicone sponge with an unsupported (transfer) acrylic pressure sensitive adhesive. 400FR gasket tape is good for water sealing and dust sealing (e.g. NEMA and IP) in rugged environments. This long life silicone sponge gasket tape has excellent long term rebound, is UV resistant and UL 94V-0 listed. The strong acrylic adhesive backing is well suited for bonding to high, medium and some low surface energy substrates.

Strip-N-Stick 300AR Gasket Tape – Reinforced, Closed Cell Silicone Sponge with Acrylic Adhesive

Available Thickness (inches)ColorRoll Length (linear feet)FoamAdhesive TypeAdhesive Temp RangeAvailabilityBenefits/Uses
0.062Blue / Gray30R10450M Reinforced MediumAcrylic Transfer-20°F to +300°FStock– Reinforced strip gasket
– Reinforced gasket tape
– Unsupported acrylic adhesive
– Water gasket
– Dust gasket
– UV resistant / outdoor gasket
– Exceptional X & Y stability
0.125
Reinforced closed cell silicone sponge gasket tape. This unique medium firmness silicone sponge is made with an embedded fiberglass reinforcement which offers exceptional X & Y axis stability (no stretching during install). SNS 300AR has an unsupported (transfer) acrylic pressure sensitive adhesive (PSA) backing. This gasket tape is good for applications where dimensional stability and higher tensile strength are required. Uses include water seals and dust seals, where the operating temperatures are not extreme. This long life silicone sponge gasket tape has excellent long term rebound and is UV resistant. The strong adhesive backing is well suited for bonding to high, medium and some low surface energy substrates.

What are the different adhesives? – Silicone based adhesives are most commonly specified when a gasketing application needs to meet a wide temperature range. Acrylic based adhesives have a tighter operating temperature range than silicone, they are available in a variety of bonding strengths and cost less than silicone adhesives. A supported (or double coated) structure indicates a thin layer of PET is embedded in the adhesive which gives the gasket tape some X and Y axis dimensional stability. An unsupported adhesive, also called a transfer adhesive, is a thin, “stretchy” adhesive backing offering no X or Y axis stability.

Need custom gasket tape? – Stockwell Elastomerics also manufactures custom gasket tape. Choose one of the silicone foams or silicone sponges and combine with a stock adhesive to develop a custom combination that meets a unique design requirement. Note: custom gasket tape requires a minimum order. Small sample or test swatches are available for test bonding.

Contact Stockwell Elastomerics for Gasket Tape and Gasket Strips

Contact Us for further assistance with gasket tape and strip gaskets.

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Strip-N-Stick® is a registered trademark of Saint-Gobain.

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Request the Free Gasket Tape Touch Brochure

Request a free “touch” brochure with small samples of gasket tapes to touch and feel.

Request Brochure