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 6240-01-168-6185
NSN 7035-00-064-7008
NSN 6130-01-029-4550
NSN 6145-00-150-5049
NSN 6110-00-170-6520
NSN 6135-00-170-8819
NSN 6610-01-376-7456
NSN 5950-01-331-2216
NSN 6130-01-539-9458
NSN 6150-00-881-3439
NSN 5915-01-147-0872
NSN 5915-00-754-7339