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 5990-00-660-8885
NSN 6150-01-106-2307
NSN 5985-00-837-5597
NSN 6645-00-443-8011
NSN 5925-01-447-3279
NSN 5915-01-199-7176
NSN 7035-00-968-4848
NSN 5915-00-485-2821
NSN 5925-01-605-1810
NSN 6220-00-262-0017
NSN 5975-01-541-9796
NSN 6610-00-967-0428