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 6320-01-155-8295
NSN 6135-01-154-3526
NSN 5910-01-069-3799
NSN 6220-00-681-0483
NSN 5985-01-462-1845
NSN 6150-01-529-7368
NSN 6650-01-412-1040
NSN 5998-01-251-1541
NSN 5915-01-323-4720
NSN 6685-00-033-7933
NSN 6620-01-094-6549
NSN 6220-01-088-6604