Service weight gaskets Multi-tite gaskets (service weight gasket) ,soil pipe gasket, USA standard sv gasket. Material: NBR hardness: 60+_5 shore A Size: 2 3 4 6 Inch color:black apply: soil pipe fitting, cast iron pipe meet: ASTM C564 standard Wang Jun General manager Ningbo Jiangdong Grommet Rubber Inc. Add: No.762, zhongxing road, Ningbo, CHINA 315040 T:0086-574-27878366 15924312350 F:0086-574-27878368