We offer o ring.Material epdmsiliconefkmviton etccolor black, red, yellow, blue, green etcsize&shape as customer's drawings or samplespacking inner plastic bag, outside cartonas customer's requirementcertificates iso9001:2000, ts16949function dustwindwatershocksmoke-proof, wear-resisting, protectivepayment terms tt lc dp etcshipping 7 workdays after the orderssample freeapplication mechanical sealing, fixed sealing, shaft sealing, hole sealing, dust prevention sealing, equipment sealing, pump sealing, flange sealing, hydro sealing, junction surface sealing and etc. features: 1, oil-resistant, heat resistant2, dustproof and water proof3, durable4, excellent anti-chemical character.5, anti- compressibility function is very good.6, good ozone resistance , aging resistance , highlow temperature resistance, weather resistance etc. application: mechanical sealing, fixed sealing, shaft sealing, hole sealing, dust prevention sealing, equipment sealing, pump sealing, flange sealing, hydro sealing, junction surface sealing and etc. Different material has different performance, we can supply rubber products at customer's requirements our product are widely export to usa, canada, australia, britain, pakistan, thailand etc, we will supply good product and good service to our customer!