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 6145-00-369-3880
NSN 5960-01-303-5884
NSN 5985-00-800-5438
NSN 5920-01-459-3863
NSN 6650-01-292-2963
NSN 6610-01-438-9285
NSN 6110-01-418-7762
NSN 5960-00-536-1535
NSN 6145-00-150-5049
NSN 6650-01-538-8776
NSN 6150-01-162-3180
NSN 6320-01-371-3047