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 5925-00-720-1354
NSN 5985-01-069-2098
NSN 5960-00-268-3200
NSN 6145-01-160-0811
NSN 5985-01-055-6688
NSN 5905-01-597-3934
NSN 5920-01-113-4041
NSN 5930-01-453-4876
NSN 6150-00-221-6684
NSN 5855-01-197-2774
NSN 6130-00-018-8621
NSN 5996-01-511-6127