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 6645-01-422-1374
NSN 5990-01-419-0661
NSN 5985-00-724-8273
NSN 5915-00-909-2331
NSN 6220-01-549-4913
NSN 7035-01-619-9538
NSN 6150-01-522-0967
NSN 5998-00-545-5901
NSN 5855-00-079-2370
NSN 6220-01-272-3177
NSN 6130-00-234-3754
NSN 6620-01-444-4048