Closed Cell Sponge Gaskets

Offering tremendous compressibility and a wonderful seal at an economical price, closed cell sponge gaskets may be ideal for your project. At Blaylock Gasket & Packing, we are proud to stock a wide variety of products, including stripping, sheet material, and custom gaskets. 
 
These closed-cell gasket materials make excellent gaskets and seals where high compression is needed. There are different types of materials for all of your sealing requirements. The medium to be sealed and temperature are factors that need to be considered when selecting the proper sponge for your sealing application. If the information contained on this page is not sufficient to help you answer questions; please do not hesitate to contact us for additional information. These materials are available in black and gray. The material is also available with a cloth laminate on one side in a variety of colors. The materials also come with optional adhesive on one side. Available in stripping or sheet or roll form. 

Neoprene, EPDM, SBR Blend (SCE41B, SCE42B, SCE43B, SCE45B)

This material is an economical seal with excellent compression. This material can be used to absorb shocks cushion, deaden sound and seal against, air moisture and light and dust penetration. The blend of Neoprene and EPDM makes this material moderately resistant to oil and ozone. SCE41B is a soft-density material. SCE41B is a soft-medium density material. SCE43B is a medium density material and SCE45B is a firm product. Please refer to the chart for specs and technical data.

Neoprene Foam (SCE41N, SCE42N, SCE43N)

A material with similar characteristics to the blended material above. This material is a pure Neoprene sponge and will meet more mil-specs than the blended product and has much better resistance to oils and petroleum products.
 
    NEOPRENE/EPDM/SBR   EPDM/BLEND   EPT BLEND       100% NEOPRENE
                       
STOCK 
NUMBER		   SCE41B SCE42B SCE43B SCE45B RE41E RE42E RE43E RE41EPT SCE41NEO SCE42NEO
SPECS                      
ASTM-
D-1056-67		   SCE41 SCE42 SCE43 SCE45 RE41 RE42 RE43 RE41 SCE41 SCE42
ASTM-
D-1056-00		   2A1 2A2 2A3 2A5 2A1 2A2 2A3 2A1 2C1 2C2
Mil-R-6130C
 Type		   II-A II-A II-A II-A II-B II-B II-B   II-A II-A
Grade
 Condition		   Soft Soft-Med. Medium Firm Soft Soft-Med. Medium   Soft  Soft-Med.
Mil-C-3133C
 Mil STD
 670B		   SCE3 F2 SCE7 F2 SCE11 F2 SCE20 F2 RE3 F2 RE7 F2 RE11 F2 RE3 SCE3 F1 SCE7 F1
FLAMM-
ABILITY		                      
SPECS                      
UL-94-HF1   Listed Listed Listed           Pass Pass
UL-94-HBF   Listed Listed Listed           Pass Pass
Mil-R-6130C   Pass Pass Pass Pass Pass Pass Pass   Pass Pass
FMVSS-302   Pass Pass Pass Pass Pass Pass Pass   Pass Pass
PHYSICAL
PROPERTIES		                      
25% Compression
 Deflection
 (PSI)		   2-5 5-9 9-13 17-24 2-5 5-9 9-13 2-5 2-5 5-9
Density Approximate
 (PCF)		   6 +/- 2 6 +/- 2 9 +/- 2 12 +/- 2 6 +/- 2 6 +/- 2 9 +/- 2 3 +/- .5 9 +/- 2 9 +/- 2
Water Absorption 
Max. Weight %		   5 5 5 5 5 5 5 <10 5 5
Temperature 
Range F		   -40/+200 -40/+200 -40/+200 -40/+200 -70/+220 -70/+220 -70/+220 -10/+180 -40/+150 -40/+150
Temperature High
Intermittent F		   250 250 250 250 250 250 250 180 200 200
Ozone
 Resistance		   Excellent Excellent Excellent Good Excellent Excellent Excellent Excellent Fair Fair
Tensile Strength
 (PSI)		   75 100 100 150 80 80 100 50 80 90
Fuel B Max % 
Weight Change		   n/a n/a n/a n/a n/a n/a  n/a   <250 <250
Elongation Typical
 Properties %		   150 150 150 150 150 150 150 250 150 150
Durometer Shore
 00 (Approx.)		   30-50 45-60 55-70 75-OVER 30-50 45-60 55-70 30-50 30-50 45-60
Shrinkage 7 Days @ 
158 F Max		   5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
K Factor   0.30 0.30 0.38   0.38 0.38 0.38 0.30 0.38 0.38

Polyvinyl Chloride Foam

PVC

This material comes in a variety of densities to best suit your sealing application. General performance characteristics of PVC include:
  • Absorbs Shocks, cushions, deadens sound, and eliminates excess vibration.
  • Provides an excellent buffer between contact surfaces
  • PVC has excellent UV Resistance
  • Can be used to seal a wide variety of chemicals (call for details)
  • Closed-cell vinyl foam products include the ability to make a long-life seal against air, moisture, and light and dust penetration when compressed 30% or more.
  • PVC insulates in thermal, electrical, and sound applications.

Low Density PVC

V700 Series

This economical general purpose foam tape is manufactured for use in applications requiring positive seals on irregular surfaces or when flex and conformability to seal tight radius curves are critical considerations. This material is a self-extinguishing, flame retardant formulation that meets FMVSS 302A Specifications. This material is available with or without an acrylic adhesive. Low-density PVC is also available cast onto a 1.5 mil polyester film to provide dimensional stability, reducing stretching of the foam, reducing wear, and preventing sticking to surfaces. This material is inherently resistant to fire, ultraviolet rays, most chemicals, and solvents.
      TYPICAL PHYSICAL PROPERTIES                 V700
Test Method Property Value
ASTM D-1667 Density,  lbs/cu.ft 7
ASTM D-2240 Hardness (shore 00) 14
ASTM D-1667 Compression Deflection @ 25%   (psi) 4
GTP (1) Water Absorption (% by volume) 1.1
ASTM D-412 Tensile Strength   (psi) 25
ASTM C-518 Thermal Conductivity (k factor) (btu-in.)/ (hr.sq.ft.) (°F) 0.27
  Recommended Service Temperature  (°F) -40 – 180
                                                              (°C) -40 – 82
 
Recommended Application Temperature  (°F)
                                                                        (°C)
  50-110
10-45
 Fungi Resistance                    Excellent
 Oxidation Resistance             Excellent
 Weather Resistance               Excellent

*This data is a general guide for the selection of materials and does not constitute specification limits. It should not be used as the sole means of specifying a material for an application. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations, consult with Blaylock Gasket & Packing. Failure to select proper sealing products could result in property damage and/or serious personal injury. Specifications are subject to change without notice.
(1)    GTP Gaska Tape Procedure. Typical performance properties and based on samples tested and are not guaranteed for all samples of this product.

Medium Density PVC

V1500 Series

This medium density foam tape is manufactured for use in applications requiring positive seals on irregular surfaces. This material; provides an excellent combination of flexibility and conformability with strength and wear resistance. This material is a self-extinguishing, flame retardant formulation that meets FMVSS 302A Specifications. This material is available with or without an acrylic adhesive. V1500 series PVC foam absorbs shocks, cushions, deadens sound and eliminates excise vibration. It has excellent dimensional stability. This material is inherently resistant to fire, ultraviolet rays, most chemicals, and solvents.

      TYPICAL PHYSICAL PROPERTY                  V1500
Test Method Property Value
ASTM D-1667 Density,  lbs/cu.ft 15
ASTM D-2240 Hardness (shore 00) 40
ASTM D-1667 Compression Deflection @ 25%   (psi) 4
GTP (1) Water Absorption (% by volume) 1
ASTM D-412 Tensile Strength   (psi) 80
ASTM C-518 Thermal Conductivity (k factor) (btu-in.)/ (hr.sq.ft.) (°F) 0.3
  Recommended Service Temperature  (°F) -30 – 200
                                                                     (°C) -35 – 90
 
Recommended Application Temperature  (°F)
                                                                        (°C)
  50-110
10-45
    Fungi Resistance                       Excellent
    Oxidation Resistance                Excellent
    Weather Resistance                  Excellent

*This data is a general guide for the selection of materials and does not constitute specification limits. It should not be used as the sole means of specifying a material for an application. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations, consult with Blaylock Gasket & Packing. Failure to select proper sealing products could result in property damage and/or serious personal injury. Specifications are subject to change without notice.
(1)    GTP Gaska Tape Procedure. Typical performance properties and based on samples tested and are not guaranteed for all samples of this product.

Heavy Density PVC

V2500 Series

This Heavy density foam tape is manufactured for use in the most demanding sealing or cushioning applications. High internal strength resists pressures from outside forces and high hardness resists deterioration. This material; provides an excellent combination of flexibility and conformability with strength and wear resistance. This material is a self-extinguishing, flame retardant formulation that meets FMVSS 302A Specifications. This material is available with or without an acrylic adhesive. V1500 series PVC foam absorbs shocks, cushions, deadens sound, and eliminates excise vibration. It has excellent dimensional stability. This material is inherently resistant to fire, ultraviolet rays, most chemicals, and solvents.

      TYPICAL PHYSICAL PROPERTIES                 V2500
Test Method Property Value
ASTM D-1667 Density,  lbs/cu.ft 25
ASTM D-2240 Hardness (shore 00) 58
ASTM D-1667 Compression Deflection @ 25%   (psi) 14
ASTM D-1067 Compression Set @ 25% 6
GTP (1) Water Absorption (% by volume) 1.2
ASTM D-412 Tensile Strength   (psi) 130
ASTM D-412 Percent Elongation 110
ASTM C-518 Thermal Conductivity (k factor) (btu-in.)/ (hr.sq.ft.) (°F) 0..33
  Recommended Service Temperature  (°F) -40 – 180
                                                                     (°C) -35 – 90
 
Recommended Application Temperature  (°F)
                                                                         (°C)
  50-110
 10- 45
 Fungi Resistance                           Excellent
 Oxidation Resistance                    Excellent
 Weather Resistance                      Excellent

*This data is a general guide for the selection of materials and does not constitute specification limits. It should not be used as the sole means of specifying a material for an application. Your specific application should not be undertaken without independent study and evaluation for suitability. For specific application recommendations, consult with Blaylock Gasket & Packing. Failure to select proper sealing products could result in property damage and/or serious personal injury. Specifications are subject to change without notice.
(1)    GTP Gaska Tape Procedure. Typical performance properties and based on samples tested and are not guaranteed for all samples of this product.

 

Closed Cell Silicone Sponge Benefits

Silicone Sponge is an excellent material for gasket applications that require soft compressible material. It is resistant to extreme temperatures and offers good compression set. It is available in Soft, Medium, Firm, and Extra Firm densities with Medium density being the most popular. It is available in many colors with orange/red being the industry standard.

Features Specifications

  • Extreme High and Low Temperatures AMS3195
  • High Compressibility Mil-R-46089
  • Low Compression Set ASTM D1056
  • UV/Ozone Resistant Mil-R-6130
  • Excellent Gasketing material Mil-Std 670

Typical Properties of Medium Density Sponge (Specifications for other densities available upon request)

PROPERTIES SPECIFICATION TYPICAL VALUES

  • AMS3195
  • Density lbs/cubic inch .025 Max .020
  • (under ¼’ thick)
  • Compression Deflection, PSI 6-14 11
  • Compression Set, 22 hrs @212°F 60% Max 29
  • Brittle Point °F -67 -103
  • Temperature Range °F N/A -103 – 450°F
  • Water Absorption 5% Max Pass
  • Tensile Strength, PSI N/A 100
  • Elongation, % N/A 200
  • Thermal Conductivity
  • (BTU in./hr. ft² °F N/A .6
The above values are typical properties and are provided for information only. They should not be used to set specification requirements. It is up to the end user to determine whether the material is suitable for the intended application.
 

Closed Cell Viton Sponge

# 1028 Sponge is a closed cell sponge formulation that is manufactured with a continuous skin on both sides. The skin makes the sponge stronger and more tear resistant. Even when the skin is punctured or cut, the sheets will not allow passage of air or fluid between cells. The non-absorbent sheets are highly compressible, resilient, light weight and provide good thermal insulation.

Like dense Viton sheet, #1028 Sponge is generally resistant to aliphatic and aromatic hydrocarbons, oils, fuels, ozone and weather, lubricants and animal or vegetable oils. It is also resistant to acids and hot water.

#1028 Sponge sheets have a service temperature range of -10°F to 400°F however elevated temperature while under compression will have an adverse effect on the resilience of this material.

Available in .125”, .250”, .375”, .500”. Call for sheet sizes available in each thickness.
 
 

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