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 6145-00-405-2049
NSN 6645-00-618-6694
NSN 6240-01-393-9005
NSN 6220-01-101-9721
NSN 6130-00-256-6559
NSN 6240-01-032-4624
NSN 6240-01-095-6557
NSN 5998-00-171-6586
NSN 5960-00-775-3565
NSN 6110-01-378-1046
NSN 5999-00-617-2830
NSN 6145-00-834-8744