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 2925-01-408-9362
NSN 5996-00-984-2145
NSN 6150-01-578-6243
NSN 6145-00-186-6291
NSN 5920-01-042-6680
NSN 5835-01-246-0972
NSN 6135-01-142-6456
NSN 6645-01-390-6520
NSN 5930-01-576-3108
NSN 5998-01-634-0604
NSN 6150-01-194-4442
NSN 6110-01-158-4663