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 5996-00-062-8338
NSN 6105-00-553-7666
NSN 5975-01-607-6907
NSN 5835-00-170-5238
NSN 6320-01-046-5228
NSN 6650-01-033-6667
NSN 4140-01-437-8715
NSN 2925-00-510-0760
NSN 6685-01-432-0055
NSN 6620-00-995-1811
NSN 2925-01-462-1620
NSN 6610-01-043-4043