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 7035-01-429-0431
NSN 6610-01-143-9625
NSN 6685-00-466-8879
NSN 6620-01-357-3643
NSN 6130-01-086-5973
NSN 6145-00-357-5010
NSN 6610-01-303-2281
NSN 5975-00-823-0979
NSN 5990-01-507-7495
NSN 5975-01-508-5818
NSN 6105-01-111-3043
NSN 5985-01-384-1932