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 5905-00-800-5151
NSN 5950-01-399-1558
NSN 5920-00-868-1691
NSN 6620-01-312-6350
NSN 5996-01-514-1315
NSN 5999-01-524-7755
NSN 5930-01-634-0659
NSN 5915-01-358-1296
NSN 6610-00-109-9519
NSN 5920-01-225-7610
NSN 6105-00-759-1240
NSN 5915-01-613-1294