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 6145-01-229-5654
NSN 5920-01-145-5362
NSN 5855-01-426-5589
NSN 6240-01-524-3436
NSN 5905-01-446-4017
NSN 6105-00-253-1654
NSN 5930-01-313-6590
NSN 6145-01-124-9062
NSN 5910-01-084-2292
NSN 6220-01-448-1182
NSN 6145-00-327-4770
NSN 6110-01-465-2607