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 5895-01-313-3229
NSN 6650-00-021-2467
NSN 5945-01-190-8585
NSN 6105-00-549-2668
NSN 5945-01-391-1041
NSN 5905-01-162-0817
NSN 5910-01-009-6378
NSN 6135-01-010-0891
NSN 5910-01-451-4292
NSN 6135-00-866-2311
NSN 5998-01-138-8152
NSN 6220-00-660-5539