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 5985-01-313-1026
NSN 5915-00-128-2900
NSN 6220-01-410-7555
NSN 6135-01-608-3470
NSN 6650-01-610-5856
NSN 5996-00-231-9322
NSN 5930-00-292-1089
NSN 5975-00-931-7910
NSN 5990-00-359-9839
NSN 5945-01-596-4430
NSN 5960-01-151-4518
NSN 7035-00-360-2008