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 6685-01-319-4545
NSN 5999-01-375-7661
NSN 5985-01-492-5943
NSN 6145-00-468-3583
NSN 5915-01-422-9979
NSN 5998-01-604-3974
NSN 6105-00-890-3002
NSN 5950-00-224-4499
NSN 5960-01-360-1402
NSN 5925-01-418-8051
NSN 6110-01-093-8263
NSN 6645-00-009-8811