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 6135-00-809-2148
NSN 5945-01-335-6994
NSN 5895-00-007-5533
NSN 6645-01-085-4214
NSN 4140-00-555-3856
NSN 6150-00-233-6356
NSN 6135-01-231-3991
NSN 5945-01-145-6329
NSN 5930-01-428-4258
NSN 5998-01-391-6549
NSN 6110-01-424-8871
NSN 5965-01-148-3396