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 6620-00-935-1321
NSN 5915-01-235-8077
NSN 5930-01-272-8630
NSN 5965-00-252-6014
NSN 5930-01-647-1638
NSN 6620-01-186-4374
NSN 5996-01-086-5903
NSN 6150-01-286-1915
NSN 6130-01-226-0343
NSN 5930-01-012-1354
NSN 6610-01-393-5475
NSN 5905-01-376-1561