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 6220-01-448-1182
NSN 6320-01-481-7322
NSN 5998-01-179-5168
NSN 6110-00-438-9158
NSN 6110-01-199-2611
NSN 5935-00-316-6186
NSN 5975-01-418-8710
NSN 6240-01-526-5099
NSN 5835-01-487-3042
NSN 7035-00-834-2090
NSN 5925-00-912-5326
NSN 5920-01-426-8517