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 5975-01-171-2202
NSN 6130-01-474-9968
NSN 6220-00-121-7541
NSN 6110-00-625-8643
NSN 5905-01-425-2787
NSN 6320-01-425-1417
NSN 5996-00-222-6049
NSN 5905-01-066-2453
NSN 5935-01-017-9679
NSN 5985-01-329-9182
NSN 5998-01-606-9065
NSN 5990-00-568-4940