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 5835-01-538-8080
NSN 2925-00-839-6815
NSN 6610-00-451-0590
NSN 5990-00-840-6571
NSN 5920-01-226-7876
NSN 5965-01-114-9086
NSN 5910-01-297-7201
NSN 6650-01-202-0596
NSN 6135-01-506-4791
NSN 5905-00-262-9591
NSN 6610-01-139-2809
NSN 5985-01-562-1921