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 7035-00-938-8289
NSN 5945-01-567-9371
NSN 6110-01-168-8463
NSN 6685-01-245-9862
NSN 5975-01-568-7356
NSN 6135-00-567-1322
NSN 6645-01-565-6973
NSN 6105-00-296-0372
NSN 6145-01-041-6562
NSN 2925-01-064-3729
NSN 6685-01-585-6268
NSN 5930-01-516-4456