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 6145-01-243-9547
NSN 6150-00-315-7492
NSN 6320-00-343-1798
NSN 5996-00-880-5340
NSN 5945-01-145-5488
NSN 5985-00-368-7198
NSN 6320-01-484-7734
NSN 5895-01-411-5527
NSN 6645-00-754-4108
NSN 6620-01-199-8580
NSN 5835-01-414-3258
NSN 6105-01-551-2948