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 6145-01-279-1264
NSN 5999-00-171-8858
NSN 6130-01-315-1166
NSN 6240-00-762-7456
NSN 6130-01-368-5882
NSN 6645-00-521-5252
NSN 5945-00-441-7969
NSN 6145-00-701-2987
NSN 5835-01-463-2334
NSN 5930-01-415-1705
NSN 6645-00-273-1203
NSN 6110-01-459-2958