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 5985-01-554-5791
NSN 5920-01-265-1873
NSN 5930-01-256-8862
NSN 5999-01-195-9948
NSN 5905-00-840-3391
NSN 5999-01-462-6046
NSN 6220-00-020-5028
NSN 5910-00-493-9880
NSN 6645-00-456-2923
NSN 5960-01-363-5951
NSN 5985-01-162-0146
NSN 4140-01-105-7586