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 5998-00-340-9843
NSN 6685-01-541-7243
NSN 6135-00-708-0892
NSN 5945-01-630-2480
NSN 5935-00-505-0815
NSN 5985-01-116-2363
NSN 6320-00-790-4844
NSN 5950-01-106-4671
NSN 6645-00-456-2923
NSN 5985-01-442-1736
NSN 5975-01-542-3871
NSN 4140-01-490-7747