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 6620-01-233-7466
NSN 6145-01-041-9989
NSN 5905-00-834-4991
NSN 6145-00-899-6306
NSN 5925-01-415-0261
NSN 2925-00-753-8598
NSN 6650-01-027-3632
NSN 5910-01-633-9963
NSN 6145-01-499-5031
NSN 4140-01-420-2840
NSN 5835-00-119-5585
NSN 5835-01-049-5290