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Sponge Rubber > Closed Cell > R-437

PHYSICAL PROPERTIES 
Type R-437
Polymer Nitrile Butadiene Rubber (NBR)
Color Black
ASTM D-1056-67 Classification SCE-43
ASTM D-1056-00 Classification
Suffix Requirements		 2B3
B2, C1, F2, M
25% Compression Resistance1 (psi) 9 - 13
50%  Compression Set2 (%) 25
Density3 (lbs/ft3) 10 - 22
Water Absorption4 (lbs/ft2) 0.1 max.
Tensile5 (psi) 175 min.
Elongation6 (%) 175 min.
Flammability7 - FMVSS302 Pass
Standard Sheet Size (in.) +/- 3% 36" x 36"
Expected Yield (in.) 1.00"
From full bun-thickness-based on 2 level cuts  
   

125% Compression Resistance..........ASTM D-1056
2 50% Compression Set....................ASTM D-1056
3 Density........................................ASTM D-1056
4 Water Absorption..........................ASTM D-1667a
5 Tensile........................................ASTM D-412
6 Elongation...................................ASTM D-412
7 Flammability - This item and any corresponding data refer to typical performance in the specific test indicated and should not be construed to imply this material's behavior in other fire conditions.

 Other gauges and widths may be available. Please refer to Customer Service.

Note: SAEJ 18 is equivalent to ASTM D-1056.

Issued : 10/01/04