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 6685-01-231-0353
NSN 6240-01-253-0687
NSN 6320-00-082-5868
NSN 6135-01-484-8637
NSN 5935-00-900-3177
NSN 6240-01-090-2280
NSN 5935-00-032-9772
NSN 6220-01-653-0953
NSN 5935-01-525-8011
NSN 6610-01-493-9971
NSN 5895-00-907-6991
NSN 5990-01-084-0807