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 5835-00-187-1481
NSN 5999-01-167-2123
NSN 2925-01-620-9673
NSN 5925-01-034-9288
NSN 4140-01-323-4279
NSN 6135-01-238-2878
NSN 5998-01-526-1920
NSN 5945-00-248-2973
NSN 2925-01-035-1096
NSN 5998-01-121-7454
NSN 6130-01-422-1850
NSN 5999-01-410-8369