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 7035-01-391-7470
NSN 5999-01-038-5525
NSN 5915-01-237-9860
NSN 5996-01-364-1074
NSN 5998-01-212-5420
NSN 6150-01-073-3935
NSN 5990-01-147-8097
NSN 6135-01-388-2581
NSN 6130-01-475-2361
NSN 5975-01-112-0972
NSN 2925-01-628-7580
NSN 5999-01-236-4378