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 6105-01-031-7190
NSN 5950-01-044-6175
NSN 5910-00-356-0160
NSN 5965-00-448-9923
NSN 4140-01-122-1370
NSN 5999-01-261-6757
NSN 5910-00-964-1714
NSN 6240-00-067-7526
NSN 6150-00-602-7812
NSN 6220-01-634-0660
NSN 5996-00-190-8895
NSN 5925-01-318-7846