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 5855-00-411-8688
NSN 6645-01-266-8831
NSN 5835-00-187-1481
NSN 5999-01-327-4252
NSN 2925-00-149-0760
NSN 5925-01-155-9583
NSN 5965-00-342-5126
NSN 5945-01-070-5962
NSN 5945-01-154-8837
NSN 6685-00-020-2976
NSN 6110-00-518-2998
NSN 5985-01-653-3186