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 5925-01-185-5436
NSN 5996-00-031-2828
NSN 5855-01-568-6840
NSN 6650-01-467-2355
NSN 5920-00-216-4759
NSN 5905-01-140-9729
NSN 5855-00-482-9876
NSN 5960-01-598-6003
NSN 6145-01-156-0284
NSN 5895-00-837-2343
NSN 5910-01-570-7343
NSN 5915-00-983-4998