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 6220-00-991-8280
NSN 5960-01-495-0859
NSN 6130-01-502-6416
NSN 5998-01-465-7602
NSN 5895-01-329-9330
NSN 6240-01-595-0803
NSN 6110-00-442-3497
NSN 7035-01-240-0541
NSN 6145-01-646-7143
NSN 4140-00-885-3797
NSN 5965-01-318-5836
NSN 5905-01-596-5744