1.Material:NR 2.Good sealing, waterproof, anti-aging ect. 3.ISO/TS16949,ISO9001:2000,ROHS 4.OEM available 5.MOQ:1000PCS Product InfoProductToilet flapperMaterialNR or PVCModel NO.KT1678MOriginChina(mainland)Hardness50±5ColorBlackApplicationUsed in toilets, fittings, pipes, showers and other bathroom accessories industryPerfermanceWith good sealing, water resistance, oil resistance, anti-aging, ...