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 6240-01-096-2506
NSN 5910-00-018-2100
NSN 5905-01-600-0179
NSN 5895-01-354-7601
NSN 5910-00-216-8081
NSN 6240-01-498-3168
NSN 6645-00-547-4388
NSN 6150-00-189-0292
NSN 6110-01-122-5916
NSN 6135-01-159-3032
NSN 5945-01-481-5769
NSN 5905-00-258-5288