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 2925-01-532-8445
NSN 6130-01-229-8896
NSN 6685-00-720-3525
NSN 5965-01-537-0023
NSN 2925-01-197-7864
NSN 6150-00-977-7675
NSN 2925-01-484-8556
NSN 5999-01-093-2723
NSN 6650-00-908-6358
NSN 5895-00-936-9136
NSN 5960-01-416-6187
NSN 6610-00-621-8532