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 5925-01-497-1061
NSN 6110-00-891-9917
NSN 6220-00-880-1624
NSN 6130-00-486-7599
NSN 5965-01-179-7223
NSN 6150-01-481-7702
NSN 5975-00-144-3195
NSN 6685-00-734-7630
NSN 5950-00-008-8685
NSN 4140-01-034-5135
NSN 5950-01-449-2952
NSN 5950-00-696-2267