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 5960-01-481-3722
NSN 5985-01-052-6473
NSN 5990-01-384-2697
NSN 5920-00-546-3344
NSN 7035-01-115-8996
NSN 4140-01-111-2486
NSN 5910-01-592-8727
NSN 5835-01-432-1277
NSN 5975-00-541-8531
NSN 5945-01-256-0295
NSN 5985-01-100-0769
NSN 4140-01-462-7737