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 5945-01-172-2513
NSN 5835-01-502-9228
NSN 5855-00-451-6155
NSN 5960-01-531-9108
NSN 6130-00-235-4359
NSN 5996-00-931-7378
NSN 6685-00-593-4574
NSN 5990-00-311-1031
NSN 6320-00-456-0836
NSN 6135-01-305-6958
NSN 5925-01-545-0102
NSN 5945-00-045-5266