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 5930-00-340-5506
NSN 5985-01-433-2283
NSN 6645-01-164-7650
NSN 5855-00-779-2854
NSN 6645-01-644-5312
NSN 6645-01-147-5579
NSN 6645-00-163-9580
NSN 5935-01-077-9542
NSN 5950-01-431-9068
NSN 5945-00-167-7544
NSN 6130-01-144-7588
NSN 6150-01-548-6982