Silicone foam gaskets


-60°C to 230°C (250°C)


Silicone sponge


Silicone foam gaskets


Gasket   Gaskets


150 kg/m³ (very soft)
up to 600 kg/m³ (solid)


2 mm to 45 mm


Temperature resistant

Thermally stable over a wide temperature range -60°C to 230°C (250°C).


Various densities

Various densities from 150 kg/m³ (very soft) to 600 kg/m³ (firm) available.


Various thicknesses

Available in various thicknesses from 2 mm to 45 mm.


Our silicone foam gaskets, made from closed cell, lightweight silicone foam, are specifically designed for interior mass transit applications: Door Seals, Electronic Enclosure Seals, HVAC Seals and Boiler Seals, Vibration Dampening, Sound Insulation, LED Seals and Gap Fillers.

The products offer excellent compression properties in the manufacture of gaskets and seals, especially when the sealing surface is not smooth. With a water absorption of <1%, our silicone foam sheets offer excellent sealing properties against water and dust ingress, providing protection for the application. Processed on calendered production lines and controlled by advanced technologies such as back-rolling and cross-cutting equipment, the flatness and width of the silicone foam sheets remain constant to provide a high-quality, smooth surface.

Our silicone foam seals are available in thicknesses (2mm - 45mm), densities (150kg/m³ to 600kg/m³) and widths up to 1000mm. Silicone foam gaskets are available as standard in white, red-brown, dark grey or blue with the option of self-adhesive for ease of installation. Available in a range of special grades, we can formulate our silicone foam gaskets to suit your application(s).


  • Up to 1000 mm wide
  • Closed cell
  • Extremely low water absorption (<1%)
  • Excellent ozone and UV resistance
  • Available in white, riox and dark grey as standard
  • Thermally stable over temperature range -60°C to 230°C (250°C)
  • Thicknesses from 2.0 mm up to 45 mm
  • Densities from 150 kg/m³ (very soft) to 530 kg/m³ (firm)
  • Available in white, red-brown, dark grey or blue
  • Version with self-adhesive finish possible

KS Kneissl & Senn Technologie

KS Kneissl & Senn Technologie GmbH has been producing insulation materials and seals for a wide variety of applications up to a temperature range of 1600 ° C since 2001. A diverse machine park (CNC 5-axis milling, plotting, punching, sewing, water jets, vacuum forming, etc.) enables us to do a variety of things Materials in shape for you bring to. The main materials include materials such as: glass fibers, Aramid fibers, mineral fibers, Biosoluble fibers, Ceramic fibers, silicate fibers, Vermiculite, Calcium silicate, Microporous materials, Rubber Material (Rubber, silicone, Silicone sponge, etc.), etc.

The company has been certified according to ISO9001 since 2009, currently according to the 2015 standard revision.

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Data sheet KS SIL F-230 silicone foam

Product properties, typical applications and availabilities.


KS Technologie product catalog

Refractory | Seals | Foundry supplies | Conveyor chains | Chesterton

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Do you have questions?

For questions about the products please contact our specialists.