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 6105-00-216-8866
NSN 6220-00-810-9563
NSN 5855-00-058-1293
NSN 7035-01-054-5208
NSN 5910-01-479-0182
NSN 5945-00-968-7785
NSN 6240-01-280-0456
NSN 5895-01-442-4102
NSN 6645-01-466-9477
NSN 5960-01-102-5164
NSN 6150-01-513-9757
NSN 5895-01-181-3824