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 6110-01-054-2354
NSN 5835-01-526-8854
NSN 5920-00-170-4247
NSN 5999-00-532-2638
NSN 7035-01-543-7852
NSN 5996-00-156-5967
NSN 5915-00-321-0740
NSN 5945-01-150-0236
NSN 6220-01-537-2769
NSN 6620-01-033-7566
NSN 5915-01-286-7771
NSN 5975-01-366-6876