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 4140-00-289-9263
NSN 5965-01-189-4805
NSN 5998-01-090-0212
NSN 6150-00-274-5571
NSN 4140-01-357-9062
NSN 6145-01-386-6762
NSN 5985-01-382-9789
NSN 5895-00-583-1102
NSN 5996-00-107-5357
NSN 5990-01-382-5364
NSN 5925-01-318-5930
NSN 5835-01-160-7282