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 5965-01-463-2815
NSN 5985-01-123-9484
NSN 6130-00-261-4942
NSN 6105-00-188-8796
NSN 5925-01-461-7586
NSN 5990-01-205-5937
NSN 5985-01-634-0635
NSN 5855-00-991-0096
NSN 5905-01-575-3592
NSN 5975-00-083-1433
NSN 6240-01-529-2261
NSN 6650-00-513-5651