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 6135-00-170-8819
NSN 5945-00-086-3886
NSN 5965-01-596-8645
NSN 5990-01-534-8609
NSN 6620-00-915-0868
NSN 5960-00-904-0294
NSN 6130-01-330-4696
NSN 6145-01-258-4738
NSN 5945-01-054-2130
NSN 6685-01-184-0746
NSN 5950-01-538-9493
NSN 6105-00-850-8424