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 5998-00-300-2623
NSN 6220-00-080-8472
NSN 7035-00-541-8516
NSN 6240-01-388-1739
NSN 7035-00-300-3208
NSN 6620-01-519-2628
NSN 6610-01-512-2025
NSN 5895-00-833-2525
NSN 6135-01-104-3790
NSN 5835-00-356-3825
NSN 6320-01-247-0898
NSN 6320-00-149-7570