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 6150-01-281-9870
NSN 5998-01-411-9597
NSN 5920-01-293-0988
NSN 6685-01-600-8363
NSN 5999-00-815-2827
NSN 5950-00-419-0232
NSN 5990-00-274-3225
NSN 6240-01-374-6233
NSN 7035-01-413-6697
NSN 6610-01-022-2474
NSN 5998-01-619-9414
NSN 5910-01-410-7749