Thiokol, Polysulfide Rubber
Chloronated Polyethylene, Chloronated Rubber
Polyacrylic, Acrylic Rubber
Butyl Rubber
Chemical Designations (ASTM D1418-1, ISO/DIN 1629, etc.)	CO, ECO	CSM	SBR, BR	AU, EU
ASTM D2000 Elastomer Group	CH	CE	AA
E(xcellent)=Minor Effect; G(ood)=Moderate Effect; F(air)=Static Seals Only; P(oor)=Not Recommended; na=Information Not Available