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 6135-01-074-8220
NSN 6130-01-169-3355
NSN 5960-00-148-4493
NSN 6135-01-265-1384
NSN 5905-01-564-4944
NSN 5855-01-572-5390
NSN 5895-01-269-1665
NSN 5935-00-906-3995
NSN 5960-01-350-4288
NSN 5920-01-446-1123
NSN 6320-01-283-9370
NSN 6320-01-443-8676