1-1/2 in NPT sealing ring for electrical fittings and conduit entries where a tight seal is required. Commonly used to help reduce moisture and dust ingress at enclosures and fittings in commercial and industrial installations. Product type: Sealing ring Manufacturer: Nesco Manufacturer part number: SR-15 Trade size: 1-1/2 in NPT Approximate metric size reference: 38 mm Material: Steel Finish/colour: Green