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 7035-00-763-6180
NSN 6105-01-240-2363
NSN 5910-01-492-0484
NSN 5998-01-655-9431
NSN 5945-01-538-7644
NSN 6610-01-550-2368
NSN 5960-01-236-6389
NSN 5975-00-647-4968
NSN 6240-01-423-1335
NSN 5930-01-231-8965
NSN 6645-01-268-4045
NSN 6610-00-232-9485