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 6240-00-023-4993
NSN 6135-01-351-1131
NSN 6130-00-491-2060
NSN 5999-01-013-6862
NSN 6240-00-248-6517
NSN 5920-01-257-6643
NSN 5835-00-564-0057
NSN 5835-01-228-0178
NSN 5930-01-417-3148
NSN 2925-01-274-8576
NSN 7035-00-521-6423
NSN 6150-01-087-4922