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 4140-01-294-0886
NSN 4140-01-221-4050
NSN 5905-01-398-4367
NSN 6150-01-277-9184
NSN 7035-01-563-7103
NSN 6320-00-433-2773
NSN 5999-01-325-5751
NSN 6620-00-854-5024
NSN 6110-01-508-8011
NSN 6320-01-473-9024
NSN 5965-00-809-4903
NSN 2925-00-814-0429