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 6220-00-479-9171
NSN 5905-00-004-4975
NSN 5975-01-293-7562
NSN 5985-01-382-5454
NSN 6620-01-110-2754
NSN 5895-00-436-0355
NSN 6130-01-393-4455
NSN 5930-01-316-9267
NSN 5915-01-196-4787
NSN 5935-01-261-1513
NSN 2925-01-274-8576
NSN 5999-00-081-9413