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 6240-01-104-4494
NSN 5975-00-443-3427
NSN 5920-01-039-6118
NSN 7035-00-679-9027
NSN 5905-00-260-2670
NSN 6150-01-177-4496
NSN 6145-01-608-2904
NSN 2925-01-138-3565
NSN 5920-01-539-8488
NSN 6145-01-088-0387
NSN 5915-01-505-3730
NSN 5996-01-049-1483