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 6145-01-487-5589
NSN 6145-01-411-3459
NSN 6130-00-999-1116
NSN 6220-01-557-7198
NSN 5950-01-538-3862
NSN 6220-01-107-2613
NSN 5985-01-598-1810
NSN 6645-01-463-3024
NSN 5999-01-467-2502
NSN 5935-00-034-3615
NSN 5895-00-195-2751
NSN 6150-00-997-2372