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 5998-00-212-0623
NSN 6150-00-283-0994
NSN 6610-01-566-8198
NSN 5999-00-984-3338
NSN 7035-01-022-5763
NSN 6220-01-515-3735
NSN 5895-01-281-0346
NSN 5910-01-212-7852
NSN 5998-01-605-2944
NSN 5990-01-195-0593
NSN 6320-01-631-7828
NSN 6220-01-027-6244