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 5945-00-833-8948
NSN 5965-00-058-6751
NSN 6610-00-756-7906
NSN 5985-00-327-1947
NSN 6610-00-935-7131
NSN 5985-00-134-7113
NSN 5985-01-373-9497
NSN 5945-01-378-6493
NSN 5925-00-399-1120
NSN 6135-01-062-9356
NSN 6645-01-062-4042
NSN 6145-01-513-2930