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 5985-01-597-9069
NSN 5999-01-167-7936
NSN 5930-01-554-7567
NSN 5920-01-254-2753
NSN 6130-01-369-5282
NSN 6105-01-116-3439
NSN 2925-00-603-3986
NSN 5910-01-281-7666
NSN 6110-01-370-8686
NSN 6645-01-118-4563
NSN 5895-00-617-6340
NSN 4140-01-435-5002