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 5855-01-464-5084
NSN 6145-00-633-5159
NSN 6320-00-174-1362
NSN 6650-01-515-0391
NSN 5905-00-931-4069
NSN 6110-01-076-6577
NSN 5895-01-631-9504
NSN 6610-01-347-3397
NSN 5855-00-057-6900
NSN 5999-01-140-8099
NSN 5990-00-419-0236
NSN 4140-01-446-2343