Rigid grooved coupling No. 1G With EPDM gasket type E Material: ductile iron, red painted or hot dipped galvanized Certified according to standards: FM, UL Grooved coupling with NITRILE or SILICONE gasket upon request. Available options Available Options: You may also like… Choose optionBolt and nut for rigid and flexible grooved coupling Choose optionGrooved elbow 90° No. 90 Choose optionGasket for rigid and flexible grooved coupling Choose optionFlexible grooved coupling No. 1N