... )4,Certificate:ISO9001 5,Shipment terms: By sea, express or small truck6,Usage: widely applied in faucets, toilets, fittings, pipes, showers ... ; acid and alkaline resistant; airtight; shock absorption, etc.Port shenzhenShipping1) Small quantity, DHL/FEDEX/UPS/TNT-express fee will be born ... free to contact at any time Rubber o-ring silicon manufacture. ISO9001-2008 TS16949