For upper seat
An item of various shapes (usually circular, conical, cylindrical, or rectangular) used to prevent or regulate the flow of liquids or gases through the valve. May include a retainer, screw, holder, and the like.
Classification: Parts of taps, cocks, valves and similar appliances, nesoi
NSN 5855-00-896-4047
NSN 5950-01-616-8243
NSN 6145-00-095-2492
NSN 6650-01-113-7563
NSN 5985-00-141-0290
NSN 5835-01-584-8538
NSN 5855-01-417-5571
NSN 6105-01-094-5268
NSN 6135-00-900-2139
NSN 5998-01-503-0427
NSN 5990-01-555-6616
NSN 5990-01-463-2279