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 5999-01-042-1538
NSN 5905-00-936-4276
NSN 5950-01-200-4046
NSN 6650-01-094-9378
NSN 5935-01-282-0124
NSN 6320-01-180-9908
NSN 6135-01-451-2120
NSN 5895-01-605-0297
NSN 4140-01-463-6377
NSN 5920-01-296-1000
NSN 5935-01-442-1525
NSN 5998-01-425-0977