Silicone Sponge with PSA

Silicone sponge sheet

Silicone sponge manufacturers

SILICONE SPONGE SHEET

Closed Cell Silicone Sponge

National Silicone offers several grades of silicone sponge sheet. Each grade comes with its own set of unique characteristics specifically designed for high performance. The heat resistant silicone sponge we offer is considered closed cell which means the cells are non-interconnecting. The complete enclosure of each cell means our sponge sheets are ideal for applications where mechanical properties (elasticity, tensile strength, elongation, hardness and fatigue limit) are important.

Like most silicone sponge manufacturers we offer 3 standard commercial grades; soft (3-8 psi), medium (6-14 psi) and firm (12-20 psi), as well as specialty grades such as ASTM D1056 2D1 and MIL-R-6130C. All materials are flexible, compressible, offer not-stick characteristics and are ozone and UV resistant.

Silicone Sponge Sheet Benefits

Closed cell silicone sponge offers customers a highly versatile material that is easy to convert or fabricate. It is also bacteria and mildew resistant with good thermal stability. As such, it is often the rubber of choice for gaskets and seals in applications where dust and water need to be kept out. In addition, to the qualities above silicone sponge is also:

  • Food Safe – through raw materials and proper processing closed cell silicone sponge can be FDA approved.
  • Low Compression Set – great ability to rebound to its original thickness, this trait makes it well suited for application under compressive load.
  • Ozone & UV Resistant – very good weathering properties makes it an ideal choice for outdoor applications.
  • Temperature Resistant – excellent material for extreme hot or cold applications.
  • Water & Moisture Resistant – a closed cell structure means low water absorption and can be used in applications where minimal water entry is essential.

Silicone Sponge applications

Closed cell silicone sponge can be converted or fabricated into a number of different products. These end uses typically require materials that are quality consistent, dependable and can deliver outstanding performance while meeting critical safety standards in harsh working environments. For silicone sponge sheets, such as ours, potential end uses can include:

  • Automotive – seals & vibration damping pads
  • Construction – gaskets, seals & vibration damping pads
  • Food & Beverage – gasket & seals
  • HVAC – gaskets, insulation, seals & vibration damping pads
  • Led Lighting – gaskets, strips, seals & vibration damping pads
  • Mass Transit – insulation & vibration damping pads
  • Oil & Gas – gaskets, insulation & seals

Silicone Sponge roll Specifications

Supplying both smooth and fabric impression finished silicone sponge rolls provides increased choices for your engineering needs. A smooth surface finish allows for even sealing and ease of use when applying laminates and tapes. Whereas a textured finished sponge provides excellent adhesion for PSA usages.

Soft Density Silicone Sponge Sheet

Thickness (in) 1/16 -1/2
Typical length (ft)  25 – 100
Typical width (in) 36
Surface finishing – Smooth or fabric impression finish, both sides
Cell structure – Closed cell
Color –
Red/orange, grey, black, others available

Medium Density Silicone Sponge Sheet
AMS3195

Thickness (in) 1/16 -1/2
Typical length (ft)  25 – 100
Typical width (in) 36
Surface finishing – Smooth or fabric impression finish, both sides
Cell structure – Closed cell
Color –
Red/orange, grey, black, others available

Firm Density Silicone Sponge Sheet
AMS3196

Thickness (in)1/16 -1/2
Typical length (ft) – 
25 – 100
Typical width (in)
36
Surface finishing –
 Smooth or fabric impression finish, both sides
Cell structure –
Closed cell
Color –
Red/orange, grey, black, others available

get silicone SPONGE pricing

COMMERCIAL GRADE SOFT DENSITY SILICONE SPONGE SHEET

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DIMENSIONS AND APPEARANCE

Thickness (in) – 1/16 -1/2
Typical length (ft) – 25 – 100
Typical width (in) – 36
Surface finishing – Fabric impression finish, both sides
Cell structure – Closed cell
Color – Red/orange, grey, black, others available on request

PHYSICAL PROPERTIES

Compression deflection (25%)psi (kPa)3-8 (21-55)ASTM D1056
Density < 0.25” thickpcf (kg/m3)30 (475) max.ASTM D1056
Density ≥ 0.25” thickpcf (kg/m3)27 (430) max.ASTM D1056
Compression set (22h, 100°C)%60 max.ASTM D1056
Tensile strengthpsi (kPa)41 (283)ASTM D412
Elongation%259ASTM D412
Low temperature brittleness°C (°F)-75 (-103)ASTM D746

 TOLERANCES

Target Thickness, in (mm)Minimum, mmMaximum, mm
1/16 (1.6)1.301.90
3/32 (2.4)2.102.70
1/8 (3.2)2.803.60
3/16 (4.8)4.405.20
1/4 (6.4)6.006.80
3/8 (9.5)9.0010.00
1/2 (12.7)12.2013.20

COMMERCIAL GRADE MEDIUM DENSITY SILICONE SPONGE SHEET AMS3195

Download PDF

DIMENSIONS AND APPEARANCE

Thickness (in) – 1/16 -1/2
Typical length (ft) – 25 – 100
Typical width (in) – 36
Surface finishing – Fabric impression finish, both sides
Cell structure – Closed cell
Color – Red/orange, grey, black, others available on request

PHYSICAL PROPERTIES

Compression deflection (25%)psi (kPa)6-14 (41-96)ASTM D1056
Density < 0.25” thickpcf (kg/m3)43 (690) max.ASTM D1056
Density ≥ 0.25” thickpcf (kg/m3)34 (550) max.ASTM D1056
Compression set (22h, 100°C)%60 max.ASTM D1056
Tensile strengthpsi (kPa)125 (862)ASTM D412
Elongation%230ASTM D412
Low temperature brittleness°C (°F)-55 (-67)ASTM D746

 TOLERANCES

Target Thickness, in (mm)Minimum, mmMaximum, mm
1/16 (1.6)1.301.90
3/32 (2.4)2.102.70
1/8 (3.2)2.803.60
3/16 (4.8)4.405.20
1/4 (6.4)6.006.80
3/8 (9.5)9.0010.00
1/2 (12.7)12.2013.20

COMMERCIAL GRADE FIRM DENSITY SILICONE SPONGE SHEET AMS3196

Download PDF

DIMENSIONS AND APPEARANCE

Thickness (in) – 1/16 -1/2
Typical length (ft) – 25 – 100
Typical width (in) – 36
Surface finishing – Fabric impression finish, both sides
Color – Red/orange, grey, black

PHYSICAL PROPERTIES

Compression deflection (25%)psi (kPa)12-20 (83-138)ASTM D1056
Density < 0.25” thickpcf (kg/m3)52 (830) max.ASTM D1056
Density ≥ 0.25” thickpcf (kg/m3)43 (692) max.ASTM D1056
Compression set (22h, 100°C)%60 max.ASTM D1056
Tensile strengthpsi (kPa)100 (689)ASTM D412
Elongation%200ASTM D412
Low temperature brittleness°C (°F)-55 (-67)ASTM D746

TOLERANCES

Target Thickness, in (mm)Minimum, mmMaximum, mm
1/16 (1.6)1.301.90
3/32 (2.4)2.102.70
1/8 (3.2)2.803.60
3/16 (4.8)4.405.20
1/4 (6.4)6.006.80
3/8 (9.5)9.0010.00
1/2 (12.7)12.2013.20

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