An item of various shapes and cross-sections, that may be flanged and that is designed to fit over a valve seat, allowing proper positioning of the seat with a flow control device.
Classification: Parts of taps, cocks, valves and similar appliances, nesoi
NSN 4140-01-475-5402
NSN 6240-01-604-0419
NSN 6220-01-061-3615
NSN 5935-00-408-1625
NSN 5990-01-459-9533
NSN 5990-01-357-6175
NSN 6150-00-779-0725
NSN 5920-01-500-8005
NSN 6220-01-519-4254
NSN 6105-01-192-3049
NSN 5999-00-332-0351
NSN 6320-00-831-2227