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 5998-00-208-3362
NSN 5910-00-615-4657
NSN 5985-01-555-9165
NSN 5999-01-028-6785
NSN 6610-00-899-1751
NSN 6150-01-135-7896
NSN 6650-00-515-6002
NSN 5996-01-482-7596
NSN 6685-01-146-4498
NSN 6130-00-356-1787
NSN 2925-00-404-6461
NSN 5950-01-020-9874