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 6145-00-940-9555
NSN 5925-01-242-1524
NSN 7035-01-296-4737
NSN 6220-00-482-8921
NSN 5910-00-836-8902
NSN 6320-00-583-3104
NSN 6610-00-629-1883
NSN 5905-01-445-0988
NSN 6110-01-371-1978
NSN 2925-01-327-3069
NSN 6130-00-443-6226
NSN 5895-00-960-8526