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 5935-01-068-1003
NSN 2925-01-043-9786
NSN 7035-01-438-2108
NSN 6110-00-453-8971
NSN 6135-01-604-8739
NSN 5999-01-025-1404
NSN 5960-00-728-3459
NSN 4140-01-050-5764
NSN 6220-01-014-7207
NSN 5935-01-356-2548
NSN 5920-00-952-1374
NSN 6145-01-509-5822