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 5910-01-145-5166
NSN 5985-00-173-9350
NSN 5895-01-014-6511
NSN 5925-01-624-8671
NSN 6320-00-433-2773
NSN 6145-01-113-8205
NSN 6645-01-175-3568
NSN 5990-00-717-5648
NSN 6150-01-222-1698
NSN 6645-01-247-4549
NSN 5925-01-629-3966
NSN 5895-00-519-8893