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 5905-01-023-8573
NSN 5950-00-498-5166
NSN 5950-00-466-4215
NSN 6645-01-556-5263
NSN 6130-01-517-6490
NSN 6610-01-352-5500
NSN 5905-01-111-0613
NSN 6110-00-730-8143
NSN 5965-01-415-2898
NSN 5960-00-904-3835
NSN 5985-01-156-6558
NSN 6110-00-784-0262