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 5895-01-250-0032
NSN 2925-01-594-5385
NSN 4140-01-028-9602
NSN 6110-01-086-3688
NSN 5960-01-406-4136
NSN 5920-00-373-3636
NSN 6105-00-319-5897
NSN 6105-00-541-8472
NSN 4140-01-353-7761
NSN 5895-00-905-5730
NSN 6610-01-521-9801
NSN 6320-01-478-9351