Valve Rebuild Kit, For Use With 3UL39, Includes O-Rings, Cap Retaining, Solenoid Base Sub Assembly, Compression, Core Assembly, Clip Retaining, Seat, Support, Piston, Seal Lip, Disc, Snubber, Flow Control, Washer, Instructions Valve Rebuild KitsReplacement parts for Asco solenoid valves. For a complete list of kit contents, see DrillSpot.com .