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 5998-00-815-7802
NSN 2925-01-203-0493
NSN 5985-01-274-6609
NSN 6645-00-495-6797
NSN 6145-01-030-4944
NSN 6240-00-398-0740
NSN 6135-01-512-8105
NSN 5990-00-174-6695
NSN 5935-00-722-4500
NSN 6240-01-648-0661
NSN 5895-00-118-7645
NSN 7035-01-081-8017