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 6130-00-012-3070
NSN 6620-01-557-6512
NSN 5998-01-437-9622
NSN 5835-01-013-8797
NSN 5905-01-139-5314
NSN 5930-00-518-1642
NSN 5945-01-168-9671
NSN 6135-00-930-5372
NSN 5950-00-833-9024
NSN 5999-01-641-5018
NSN 5996-01-055-6572
NSN 6320-00-593-0379