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 5835-01-369-7837
NSN 5998-01-609-4604
NSN 6320-00-270-8222
NSN 6620-00-593-5313
NSN 6220-01-500-2935
NSN 6685-01-188-7157
NSN 5990-00-257-2637
NSN 5835-01-013-8797
NSN 5945-01-393-7346
NSN 2925-00-169-3775
NSN 2925-01-273-4898
NSN 5975-01-052-7661