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 2925-00-516-8841
NSN 6220-01-201-5412
NSN 6240-01-551-8612
NSN 5855-00-896-4047
NSN 5965-00-630-7872
NSN 5996-00-606-9543
NSN 5910-01-107-2305
NSN 6645-00-967-3429
NSN 6145-01-090-6464
NSN 5960-01-632-6576
NSN 5920-01-367-1323
NSN 6105-00-196-4957