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 5985-01-042-7955
NSN 7035-01-056-5350
NSN 6130-00-291-4877
NSN 4140-00-185-0742
NSN 6145-00-000-0090
NSN 6685-01-174-0872
NSN 6110-00-139-0750
NSN 6650-00-775-6560
NSN 6320-01-443-3826
NSN 5920-01-587-2675
NSN 5930-01-463-8233
NSN 5895-00-931-1597