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 6610-00-726-7984
NSN 5990-01-271-1628
NSN 6685-01-188-7379
NSN 6220-01-443-9315
NSN 6620-01-524-0583
NSN 5915-01-399-4579
NSN 5925-01-367-6118
NSN 6650-01-495-8031
NSN 6105-01-533-4725
NSN 5915-01-281-7553
NSN 6130-01-160-0227
NSN 6650-01-350-5578