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 5895-01-437-8527
NSN 6145-00-578-7522
NSN 5855-00-179-8588
NSN 2925-01-565-6410
NSN 5945-01-261-6750
NSN 6685-00-851-0515
NSN 5990-01-147-5225
NSN 5990-01-065-0492
NSN 5915-00-892-3011
NSN 5935-01-013-2437
NSN 6145-01-605-5602
NSN 5930-01-605-1263