The material is a276-316.
No other part numbers with same form, fit, and function found.
A replaceable item designed to provide a stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see insert, engine valve seat.
Classification: Parts of taps, cocks, valves and similar appliances, nesoi
NSN 7035-01-163-8423
NSN 5998-01-358-8119
NSN 4140-01-374-3689
NSN 6150-00-612-1151
NSN 5950-00-837-3514
NSN 5985-01-504-2337
NSN 5950-01-473-1853
NSN 6135-00-812-9039
NSN 5895-00-852-4237
NSN 6150-01-353-2558
NSN 4140-00-106-0997
NSN 5965-01-231-0261