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 6320-01-211-6578
NSN 6145-01-212-3528
NSN 6320-01-240-4637
NSN 5835-01-553-6772
NSN 6130-00-601-2837
NSN 5990-00-079-0932
NSN 6105-01-208-4930
NSN 6620-01-406-6840
NSN 4140-01-519-3349
NSN 5965-01-608-4312
NSN 6110-00-812-0226
NSN 6130-01-656-0806