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 6650-01-287-7960
NSN 5835-00-494-8419
NSN 5960-00-968-7582
NSN 5910-00-010-3705
NSN 6240-00-325-2156
NSN 6320-01-352-5653
NSN 5925-01-233-3246
NSN 5985-01-488-3888
NSN 5985-01-154-6359
NSN 5945-01-571-4505
NSN 5855-01-369-4192
NSN 5910-00-233-6805