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 5920-01-542-8168
NSN 6240-00-705-7731
NSN 5996-01-657-7321
NSN 6620-00-376-7046
NSN 5935-01-615-5077
NSN 6645-01-221-5888
NSN 5855-00-014-5008
NSN 6685-01-472-2932
NSN 6145-00-890-7030
NSN 6105-01-113-3654
NSN 6320-00-270-8222
NSN 5905-01-057-7721