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 5985-01-411-6205
NSN 5960-01-012-6765
NSN 5998-00-839-2179
NSN 6610-01-046-5669
NSN 5998-01-621-8794
NSN 5960-01-374-0764
NSN 5915-00-437-6342
NSN 5835-01-659-5206
NSN 6610-01-337-4640
NSN 2925-01-599-1901
NSN 5855-00-411-8688
NSN 5999-01-184-2449