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 6685-01-415-3117
NSN 6610-01-334-3157
NSN 7035-01-432-2424
NSN 5965-01-397-8389
NSN 2925-01-201-3043
NSN 6620-01-203-4369
NSN 5925-01-446-6849
NSN 6610-00-536-4977
NSN 6220-00-541-8515
NSN 6320-01-087-7962
NSN 2925-00-928-5931
NSN 2925-01-043-9786