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 2925-01-522-1134
NSN 5985-01-433-3259
NSN 6650-00-125-6560
NSN 5910-01-008-1409
NSN 6220-01-204-3575
NSN 5999-01-012-9950
NSN 5855-00-688-9954
NSN 5895-00-596-8678
NSN 5930-00-950-0693
NSN 5999-01-212-9671
NSN 5960-01-345-9800
NSN 5855-00-361-0167