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 6650-00-035-9297
NSN 5990-00-548-6163
NSN 5835-01-026-0670
NSN 6240-01-473-7798
NSN 6105-01-440-7063
NSN 5905-01-409-2951
NSN 6645-00-390-7657
NSN 6105-01-391-5285
NSN 2925-00-233-5644
NSN 5895-01-334-7058
NSN 6240-00-957-5724
NSN 6650-01-411-6292