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 5999-00-853-5966
NSN 5930-01-317-6679
NSN 5895-01-237-3186
NSN 6650-01-415-5573
NSN 6135-01-346-0851
NSN 5998-00-827-0527
NSN 6135-01-391-8539
NSN 6150-00-672-8831
NSN 5990-00-920-2894
NSN 5998-01-293-4974
NSN 6145-00-155-5297
NSN 6320-01-607-0347