4" X 2" Flex Donut Fernco

Pipe hub donuts for compression sealing of sewer pipe joints and DWV connections such as sockets, bells, hubs and spigots. Not for use on pressurized plumbing systems. Meets ASTM C-1173, C-1277, C1460, CISPI 310, IAPMO PS 109, PS90 and CSA B602.