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 5996-01-649-7993
NSN 5855-01-131-9336
NSN 5895-00-467-1140
NSN 6220-01-390-8620
NSN 5999-01-263-9366
NSN 6105-01-519-8003
NSN 5835-00-019-1816
NSN 6220-01-643-2696
NSN 2925-01-483-9147
NSN 5996-01-322-0021
NSN 5905-01-500-2135
NSN 6685-00-993-5548