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 5915-01-530-2149
NSN 6645-01-574-6160
NSN 5895-01-386-0135
NSN 5925-01-549-4604
NSN 5965-01-406-6320
NSN 5925-00-156-4044
NSN 6220-01-569-0964
NSN 6105-01-304-8172
NSN 5855-01-160-3802
NSN 6650-01-286-3417
NSN 5999-00-993-6449
NSN 5999-00-024-1079