... 2. OEM service 3. Prompt delivery: 1 week neoprene rubber ring rubber gasket MaterialNR,CR,NBR,SBR, SILICONE,VITON,EPDM, HNBR, ... free test slabs and hardness testers can be offered for customer's testingPackageInner plastic bag/outside carton/wooden palletsPayment ... T/T, Western Union, MoneyGramDelivery timeSamples can be ready for shipment within one week normally. Production orders can be arranged ...