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 5920-01-257-9549
NSN 5960-01-495-0859
NSN 5975-01-090-8876
NSN 5835-01-632-6627
NSN 5998-01-369-7394
NSN 5965-00-223-6354
NSN 5920-01-467-5568
NSN 6645-00-155-2398
NSN 5996-00-957-7923
NSN 6135-01-033-5052
NSN 6610-01-591-4374
NSN 5930-01-382-9798