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 6145-00-284-1514
NSN 5975-00-271-5981
NSN 7035-00-517-8232
NSN 5835-01-377-8972
NSN 5915-01-130-8735
NSN 6105-00-740-7757
NSN 5925-01-428-9978
NSN 6240-00-393-1161
NSN 5985-01-065-1675
NSN 5925-01-230-0410
NSN 6240-00-099-8606
NSN 5950-01-567-2849