Foam

  Cost* Temperature °F Compression Set Ozone Resistance Description
Sponge Blend 2 -40 to 225 Poor Fair Blend of SBR, Neoprene, Buna-N and EPDM.
Neoprene 3 -40 to 225 Good Good Good abrasion and compression set resistance.
Buna-N 4 -40 to 225 Good Fair Excellent oil and some chemical resistance.
EPDM 5 -60 to 250 Good Excellent Excellent weather and good heat resistance.
Urethane 6 -60 to 160 Excellent Excellent Excellent abrasion and compression set resistance.
Silicone 8 -60 to 450 Excellent Excellent Excellent heat and good compression set resistance.
ECH Epichlorohydrin 7 -50 to 325 Excellent/Good Excellent Excellent heat and good compression set resistance.
Cross link Polypropylene 1 -100 to 200 Good Good Fine cell, available in multi-color, strong & flexible.

*1=lowest cost, 8=highest cost