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 5925-01-446-7461
NSN 6150-01-033-0042
NSN 5905-01-555-4357
NSN 6110-01-457-7555
NSN 6320-00-174-1362
NSN 6320-01-096-6649
NSN 5960-01-484-7560
NSN 6130-00-781-7486
NSN 6685-00-567-1178
NSN 5996-00-708-6937
NSN 5985-01-330-6792
NSN 5990-00-174-6695