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 6645-01-411-5657
NSN 4140-00-699-0904
NSN 6130-00-891-6128
NSN 5920-01-532-0031
NSN 5915-01-547-4655
NSN 6130-01-243-7917
NSN 5999-00-779-1141
NSN 6220-01-597-2599
NSN 6150-00-200-7644
NSN 5985-00-224-6372
NSN 5950-00-535-9682
NSN 6110-01-474-6854