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 6145-00-934-0331
NSN 5965-01-381-4879
NSN 6685-00-182-7788
NSN 2925-01-342-1712
NSN 6645-01-388-0391
NSN 5999-00-934-9876
NSN 4140-01-490-7747
NSN 5950-01-280-5469
NSN 5950-01-289-4512
NSN 5925-00-150-1072
NSN 5895-01-528-5135
NSN 5930-01-104-9782