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 5930-00-318-9133
NSN 6110-01-004-2398
NSN 5996-00-689-9228
NSN 5985-00-466-2404
NSN 5895-00-379-4699
NSN 5965-00-537-4844
NSN 7035-01-280-4692
NSN 6650-00-007-4372
NSN 6135-01-255-4786
NSN 5985-01-187-8297
NSN 6620-01-554-0030
NSN 5950-01-009-7651