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 5930-01-537-9000
NSN 6135-01-643-9081
NSN 5996-00-313-9180
NSN 6320-01-574-1915
NSN 5910-01-102-3235
NSN 6135-01-463-3898
NSN 6145-00-414-5315
NSN 5950-01-583-9877
NSN 6105-01-012-7082
NSN 5998-01-047-0672
NSN 2925-01-577-7786
NSN 6610-01-527-0922