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 5998-01-501-6058
NSN 6645-01-579-4247
NSN 5930-01-447-2837
NSN 5910-01-205-7474
NSN 6135-01-051-7836
NSN 5895-01-071-4854
NSN 4140-01-583-9307
NSN 6610-01-493-3262
NSN 5895-00-413-4535
NSN 5910-01-490-0335
NSN 6150-01-069-2794
NSN 6320-01-562-1599