Valve Repair Kit Product Type Valve Repair Kit Material Rubber Compatible with Series 8-375 8-375A 8-375AST Operating Temperature - Maximum 140 Degrees F Operating Temperature - Minimum 33 Degrees F Includes Diaphragm O-Rings Seal Ring Compatible with Manufacturer Model Number 375 375A 475 Compatible with Grainger Part Number 213ZT0 213ZT1 213ZT6 Valve Type Relief Valves