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 6610-00-160-3315
NSN 5835-00-647-2104
NSN 5910-01-089-9785
NSN 5999-00-220-9166
NSN 5945-00-950-3792
NSN 5998-00-313-9096
NSN 6650-01-487-4949
NSN 6150-00-103-8639
NSN 7035-00-402-9426
NSN 5935-01-390-2027
NSN 6645-01-338-8506
NSN 5960-00-171-9575