419 – Natural/SBR Sponge (NR/SBR)

Temperature Range (depending on grade):

Constant Low:     -40°C                    Intermittent Low:

Constant High:    +70°C                   Intermittent High:           +80°C



Natural Rubber sponge has a unique cell structure when compared to most other blown rubber sponges. When blown you get an Open Cell structure composed of connected cells that allow air or gas to pass through when compressed but if you blend SBR without you can create a closed cell structure that still retains the better characteristics of Natural.

This new sponge structure offers good compression set characteristics, and typically rebounds faster than most closed cell sponges.



Applications include Expansion joints, gap fillers, cushioning, vibration absorption, and non-skid padding. It also used as die ejection packing in steel rule, rotary and Class A dies, Drum gaskets and applications where the material is sewn in (Example: A strap on a handbag)

Our RefCompression Deflection KPa Density Kg/m³ Strength KPa Elongation % ASTM D 1056 Colour
419 - 2424450320280 Black

Full data sheets for all grades are available on request.

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