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 4140-00-679-2687
NSN 6110-01-512-2008
NSN 5835-00-568-2956
NSN 6130-00-141-8317
NSN 2925-01-474-3363
NSN 6610-00-531-8871
NSN 5895-01-424-0020
NSN 6105-01-426-0951
NSN 4140-00-555-3856
NSN 5895-01-487-6484
NSN 6220-01-157-4937
NSN 7035-00-264-7543