Toilet Flush Valve NBR Rubber Seal Washer 68 X 30X3mm

1.Material:Nitrile rubber/Buna-n /NBR rubber2.Hardness70 Shore A3.Size:ID30mm x OD68mm x Thk3mm4.MOQ:500 Pcs5.Sample time:1-3Days6 .OEM or ODM acceptedYes7.Certification availableISO9001,ISO14001, ROHS8. Packing details1000 pcs /bag, 10 bags/ carton9.Production capaity1000000 pcs Per month10.Payment termsT/T, Paypal, Western Union ,L/C How to measure the dimensions ?Raw Material Nitrile/NBRNitrile (often referred to as buna-N rubber or perbunan) is the most commonly used elastomer in the seal industry. Nitrile is a copolymer of two monomers: acrylonitrile (ACN) and butadiene. The properties of these rubber compounds are determined by its ACN content, which is broken down into three classifications:  High nitrile >45% ACN content,Medium nitrile 30-45% ACN content,Low nitrile