NR rubber O-ring(Natural rubber O-ring) has good flexing resistance and flexibility, and because it is non-polar rubber, its electrical insulation performance is good. It has good alkali resistance but not strong acid resistance....

EPDM rubber O-ring(Ethylene-Propylene-Diene Monomer O-ring) has good aging resistance, weather resistance, water resistance, electrical insulation, chemical corrosion resistance and impact elasticity. ...