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 5905-00-112-5274
NSN 6645-00-183-8812
NSN 6685-00-688-5154
NSN 2925-01-359-4027
NSN 7035-01-227-2546
NSN 5910-01-228-8247
NSN 6610-01-445-5274
NSN 6320-01-428-9205
NSN 6650-01-505-2817
NSN 5835-01-303-6563
NSN 5998-01-143-4424
NSN 6320-01-056-1164