Leemco Repair Coupling - 4" Ductile Iron Gasket

All Leemco Gaskets are made of high-quality EPDM rubber and have the unique ribbed U-Cup gasket design. Ribbed segments assure compression of the gasket against side walls to seal under low pressures. With higher pressures, U-Cup gasket spreads inwardly and outwardly to seal and grab surfaces on both sides. Results are that the gasket takes care of sealing and assisting to restrain pipe from coming off the fitting under any pressure.