Fits Models: 3174.105-0070A, 7381983-400.0070AP, 7381983-400-007, 3174.002, 3280.040-0070A, 7301111-0070A, 7381983-400-007 Measurements OD 109mm ID 71mm LD 80mm or OD 4 & 5/16-inch ID 2 & 13/16-inch LD 3 & 1/8-inch Made of Heavy Duty Silicone to prevent blistering and Stop Ghost Flushing Replaces OEM Champion 4 Valve seals Heavy Duty Upgrade for Champion 4 OEM Seal Extra Thick Silicone Made of Heavy Duty Silicone to prevent blistering and hold down the flapper piston. Replaces OEM Champion 4 Valve seals, Fits Models: 3174.105-0070A, 7381983-400.0070AP, 7381983-400-007, 3174.002, 3280.040-0070A, 7301111-0070A, 7381983-400-007. Stops Ghost Flushing. Measurements OD 109mm ID 71mm LD 80mm or OD 4 & 5/16-inch ID 2 & 13/16-inch LD 3 & 1/8-inch