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 5998-00-292-9515
NSN 6650-01-555-4370
NSN 5990-01-013-0793
NSN 6650-01-140-4463
NSN 5920-00-190-7466
NSN 7035-00-349-8571
NSN 6150-01-156-4655
NSN 5998-01-530-2394
NSN 5930-00-934-1713
NSN 5895-01-031-5562
NSN 6150-01-619-0086
NSN 6650-01-014-7671