Soft Silicone Sponge (Closed Cell) | National Silicone

Silicone SPONGE – soft

general purpose Silicone Sponge sheet

This low compression set, soft density closed cell silicone sponge is ideal for demanding sealing and gasket applications. It is produced with a fabric finish on both sides, is flexible and can handle extreme temperature environments. Offers excellent compression set resistance and maintains its resiliency even under extended compression.

Material details

Available in – Continuous rolls or cut sheets
Thickness available (in) – 1/16  to 1/2
Typical roll lengths (ft) – 25 to 100
Typical roll widths (in) – 36
Surface finishing – Fabric impression finish, both sides
Cell structure – Closed cell
Color – Red/orange, grey, black, others available

thickness TOLERANCES

1/16 Inch (1.6 mm) – 0.05″ (1.30 mm) min / 0.07″ (1.90 mm) max
3/32 Inch (2.4 mm) – 0.08″ (2.10 mm) min / 0.10″ (2.70 mm) max
1/8 Inch (3.2 mm) – 0.11″ (2.80 mm) min / 0.14″ (3.60 mm) max
3/16 Inch (4.8 mm) – 0.17″ (4.40 mm) min / 0.20″ (5.20 mm) max
1/4 Inch (6.4 mm) – 0.23″ (6.00 mm) min / 0.26″ (6.80 mm) max
3/8 Inch (9.5 mm) – 0.35″ (9.00 mm) min / 0.39″ (10.00 mm) max
1/2 Inch (12.7 mm) – 0.47″ (12.20 mm) min / 0.52″ (13.20 mm) max
* Tolerances are typical values obtained from sample testing

Material PROPERTIES

Properties
Compression deflection (25%) psi (kPa) 3-8 (21-55) ASTM D1056
Density < 0.25” thick pcf (kg/m3) 30 (475) max. ASTM D1056
Density ≥ 0.25” thick pcf (kg/m3) 27 (430) max. ASTM D1056
Compression set (22h, 100°C) % 4 ASTM D1056
Tensile strength psi (kPa) 41 (283) ASTM D412

Full Datasheet

who to contact

Contact: Brian Lindley
Phone: 714-203-4780
Email: brian.lindley@nationalsilicone.com


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