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 6645-00-729-9900
NSN 2925-01-161-7440
NSN 2925-01-159-8312
NSN 5960-01-195-6905
NSN 5855-01-281-6689
NSN 5895-01-167-8905
NSN 6240-00-594-7138
NSN 6240-00-185-8367
NSN 5985-01-556-0913
NSN 6685-01-198-0875
NSN 6320-00-149-7570
NSN 5950-01-535-7276