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 5965-00-256-8687
NSN 6650-00-859-1859
NSN 5905-00-146-4303
NSN 5998-01-200-0128
NSN 6220-00-271-9553
NSN 5910-00-406-6442
NSN 5975-01-141-6842
NSN 5905-01-406-8710
NSN 6645-00-300-0401
NSN 5925-00-830-4896
NSN 5925-01-250-1035
NSN 5910-01-134-2061