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 5999-01-299-2410
NSN 5998-01-012-2225
NSN 5996-01-179-9951
NSN 5999-01-608-2991
NSN 6685-01-310-0584
NSN 5985-01-066-7743
NSN 5935-00-504-5968
NSN 5990-01-013-8464
NSN 5975-01-251-6753
NSN 5835-00-104-8944
NSN 5835-01-522-9881
NSN 6610-01-158-2988