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 5835-01-406-7633
NSN 5835-00-759-1109
NSN 5975-01-071-5594
NSN 2925-00-203-8735
NSN 6320-00-937-5625
NSN 6105-00-922-0864
NSN 6110-01-299-2613
NSN 4140-01-593-6670
NSN 6645-00-658-7838
NSN 7035-00-360-2008
NSN 6220-01-031-0292
NSN 5985-00-856-2989