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 6645-01-100-3296
NSN 6135-01-132-6310
NSN 6650-00-398-1821
NSN 5930-01-244-6476
NSN 6620-00-004-1374
NSN 5925-01-349-4210
NSN 6110-01-035-0347
NSN 5990-01-027-5433
NSN 5945-00-723-4629
NSN 6685-00-438-9377
NSN 6240-00-197-6819
NSN 6650-01-398-1387