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 5945-00-250-4692
NSN 6110-01-300-2234
NSN 6645-01-057-7987
NSN 6110-00-483-9841
NSN 6145-01-327-3328
NSN 6145-01-156-0284
NSN 5855-01-560-1022
NSN 6645-01-149-2247
NSN 6135-01-515-4260
NSN 6150-00-196-7322
NSN 5905-01-604-7681
NSN 5960-01-413-3877