A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5950-01-133-7347
NSN 5910-01-465-6073
NSN 5835-00-233-6327
NSN 5915-01-198-7701
NSN 5945-01-204-8594
NSN 6645-01-398-6841
NSN 5975-00-113-5257
NSN 5835-01-104-1299
NSN 5935-01-423-9463
NSN 5945-01-237-2388
NSN 6135-01-344-2157
NSN 5990-01-190-8223