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 6320-01-606-2508
NSN 6620-00-160-0844
NSN 6220-01-437-9002
NSN 6130-01-562-3695
NSN 6145-01-552-0654
NSN 5905-01-172-0894
NSN 6145-00-233-6010
NSN 6645-01-295-4373
NSN 6240-01-542-8672
NSN 5999-00-099-6889
NSN 6105-01-440-9860
NSN 6135-01-010-0891