Description 2 OF EACH REPLACEABLE O-RING IN VALVE Rebuild Kit for 1.5 Inch Mueller Tank Valve Includes; 2 flanged silicone Tri-Clamp gaskets 1000-026 2 disk o-rings 91863 2 lower handle o-rings 91867 2 upper handle o-rings 91862 OEM Mueller parts for the Mueller Milk Tank valve Mueller 91863 is same as GEA 4999-1010-381 Related; 1000-026 clamp silicone gaskets available separately Hamby Dairy Supply stocks all repair parts for Mueller Milk Coolers and Mueller-Matic Bulk Tank Washers