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 5920-01-391-7624
NSN 2925-01-100-3694
NSN 6645-01-551-3703
NSN 2925-01-658-4470
NSN 5985-01-486-6368
NSN 5895-01-211-9922
NSN 6610-00-872-0454
NSN 5985-01-605-1489
NSN 6145-00-114-0197
NSN 6240-00-901-1082
NSN 5960-00-900-6705
NSN 6220-01-339-7557