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 5999-00-054-5464
NSN 5985-01-170-5531
NSN 5835-01-122-9657
NSN 5950-00-945-6676
NSN 5950-00-955-6701
NSN 5998-01-407-5713
NSN 6110-00-402-0055
NSN 5835-01-592-2350
NSN 6110-01-632-5131
NSN 5985-00-111-1605
NSN 5950-01-123-0510
NSN 7035-01-435-4009