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 6130-00-005-8100
NSN 5990-01-032-3832
NSN 5910-00-285-6400
NSN 5998-00-155-4666
NSN 5895-00-153-2595
NSN 6130-01-390-1815
NSN 5925-00-329-5655
NSN 5960-01-025-2526
NSN 5915-01-469-2136
NSN 6220-01-237-2488
NSN 5895-01-238-0561
NSN 5895-01-534-9914