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 4140-01-337-0495
NSN 6130-01-126-4603
NSN 6105-01-006-5963
NSN 5920-01-117-6258
NSN 5998-01-495-0657
NSN 6645-00-456-2923
NSN 7035-00-238-3662
NSN 5895-01-659-8328
NSN 5835-01-555-4262
NSN 6105-01-452-3490
NSN 5998-00-125-6383
NSN 5985-00-858-6866