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 6150-01-511-0262
NSN 5990-01-138-1481
NSN 5998-00-082-0368
NSN 5915-01-605-2060
NSN 6645-01-286-3378
NSN 6610-00-225-9886
NSN 6620-01-305-0412
NSN 5985-00-581-0513
NSN 5835-01-112-4725
NSN 6105-01-050-5878
NSN 6135-01-343-1592
NSN 6240-01-596-7742