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 6145-00-069-2837
NSN 7035-00-981-7216
NSN 5855-01-236-9645
NSN 2925-01-217-0465
NSN 6110-00-596-9124
NSN 5930-01-451-4331
NSN 5910-01-053-8877
NSN 6685-01-567-6779
NSN 5960-01-460-5516
NSN 5930-00-153-3853
NSN 5910-00-965-8013
NSN 6145-01-063-2482