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 6145-01-443-2147
NSN 6240-01-115-4549
NSN 5985-00-060-8828
NSN 5930-01-634-0659
NSN 6145-01-401-3713
NSN 2925-00-708-9862
NSN 6220-00-970-3797
NSN 5950-01-411-4827
NSN 6610-01-014-3964
NSN 6320-00-160-0899
NSN 6320-01-019-1028
NSN 5915-01-190-4978