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 4140-01-169-4671
NSN 5999-01-261-4452
NSN 6685-00-587-8158
NSN 5920-01-259-1602
NSN 5855-00-466-2309
NSN 6685-01-435-4366
NSN 5960-01-323-6432
NSN 2925-01-599-1901
NSN 5999-00-319-2259
NSN 5935-00-939-5474
NSN 5915-00-338-3375
NSN 6645-01-541-5696