A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5996-01-525-7628
NSN 6610-01-072-6768
NSN 2925-01-481-7170
NSN 6145-00-904-7563
NSN 5965-01-115-4068
NSN 5915-00-255-3674
NSN 5935-00-961-1659
NSN 6105-00-719-9943
NSN 5925-00-718-7530
NSN 6320-01-195-5583
NSN 6685-01-353-2375
NSN 5985-01-240-8668