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 6145-01-482-3046
NSN 5835-00-412-4663
NSN 5999-01-519-3586
NSN 5935-00-197-4331
NSN 5985-00-811-7472
NSN 5990-00-120-2140
NSN 5920-01-196-4614
NSN 6645-00-313-2324
NSN 6620-00-726-8153
NSN 6145-00-776-9819
NSN 6135-00-962-4111
NSN 5930-00-319-4719