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 5960-01-213-6292
NSN 5960-01-268-4356
NSN 5915-00-356-5558
NSN 5950-00-337-0829
NSN 6145-00-689-9339
NSN 6135-01-572-3296
NSN 6650-00-143-1630
NSN 5960-00-034-7925
NSN 6130-01-571-7932
NSN 5925-01-331-0235
NSN 6645-01-550-3038
NSN 5930-00-889-9631