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.
NSN 6135-01-009-4929
NSN 5925-01-491-5057
NSN 6105-01-183-7798
NSN 6150-00-443-8034
NSN 5996-01-194-1719
NSN 5920-01-613-6426
NSN 6105-01-289-7261
NSN 6240-00-872-3365
NSN 6685-00-753-2896
NSN 5965-00-513-1352
NSN 5996-01-248-9236
NSN 5975-01-394-5207