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 5985-00-102-5847
NSN 5915-00-256-6188
NSN 5920-01-085-5490
NSN 6645-01-333-2035
NSN 5835-01-453-8935
NSN 6135-01-385-7276
NSN 6610-00-026-4389
NSN 5996-00-895-7951
NSN 5835-01-062-6258
NSN 6145-01-626-5269
NSN 6130-01-355-1265
NSN 5985-00-172-8940