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 5895-01-425-1415
NSN 5950-00-518-1188
NSN 5996-00-838-6941
NSN 6145-01-146-9208
NSN 5996-00-881-3491
NSN 5910-00-370-0259
NSN 5925-01-139-3866
NSN 5915-01-582-1690
NSN 6610-00-841-8221
NSN 4140-00-155-8012
NSN 6645-01-259-6092
NSN 6610-00-963-9435