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 5930-01-058-6021
NSN 6105-00-153-7967
NSN 5996-00-701-5819
NSN 6240-01-652-5215
NSN 5920-00-203-5938
NSN 2925-01-292-9248
NSN 4140-01-098-7997
NSN 6110-01-010-7030
NSN 6105-01-213-1724
NSN 5950-01-053-6595
NSN 5915-01-053-5396
NSN 6610-01-504-1276