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 5965-01-215-3184
NSN 6135-00-840-6451
NSN 6645-01-607-7931
NSN 6240-00-222-9135
NSN 6240-00-991-6929
NSN 5950-00-290-8090
NSN 6610-01-406-6696
NSN 6240-01-531-1684
NSN 6320-01-551-3553
NSN 2925-01-268-5464
NSN 2925-01-025-0082
NSN 6220-00-357-9534