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 5990-00-779-4175
NSN 4140-01-359-6231
NSN 6685-01-095-0278
NSN 5835-01-278-4683
NSN 5855-00-337-3679
NSN 5910-00-270-1262
NSN 5895-00-301-4871
NSN 2925-00-845-1480
NSN 5990-01-024-9659
NSN 5895-00-249-1079
NSN 5915-01-298-2830
NSN 6220-01-049-6349