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 6110-00-877-2940
NSN 6610-01-097-5073
NSN 6610-00-171-5015
NSN 2925-00-523-0322
NSN 5985-01-524-3898
NSN 5985-00-702-3818
NSN 5920-00-584-4592
NSN 5945-00-374-1691
NSN 5905-00-587-1702
NSN 5999-01-381-3663
NSN 6130-01-060-2063
NSN 5998-01-500-1576