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 5895-01-162-3679
NSN 5985-00-477-0761
NSN 5965-01-334-9275
NSN 6105-00-851-6481
NSN 6110-01-474-0353
NSN 6130-01-306-3365
NSN 5930-01-456-5199
NSN 6650-01-470-1315
NSN 6105-01-071-1367
NSN 6240-00-702-6955
NSN 5925-01-529-6371
NSN 6145-00-545-7215