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 6650-00-444-7796
NSN 6145-01-660-2077
NSN 5835-01-327-6324
NSN 5920-01-549-4722
NSN 2925-01-570-3690
NSN 5935-01-575-3659
NSN 6220-01-608-7870
NSN 5950-01-401-5321
NSN 5935-01-543-5621
NSN 6620-00-767-4377
NSN 5985-01-577-6142
NSN 5985-01-111-2003