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 6320-00-139-1090
NSN 6110-01-546-0652
NSN 6610-01-203-8098
NSN 6105-00-274-5460
NSN 5915-00-398-0677
NSN 6145-01-115-0859
NSN 6610-01-294-5666
NSN 5930-01-186-7723
NSN 5930-01-440-3858
NSN 6145-01-510-3352
NSN 6320-01-119-3935
NSN 5965-01-101-9094