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 6110-01-420-1229
NSN 5950-01-567-4000
NSN 5915-01-222-0879
NSN 6105-01-652-1394
NSN 6135-00-767-0331
NSN 5985-01-061-8512
NSN 6320-00-098-2858
NSN 6145-00-323-6021
NSN 6150-01-243-2538
NSN 5998-00-161-6307
NSN 6110-01-310-8476
NSN 2925-00-041-0439