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 5945-01-473-6849
NSN 5960-00-902-7423
NSN 5920-01-137-8371
NSN 5935-00-521-4774
NSN 6685-01-486-7795
NSN 7035-01-359-6108
NSN 5950-00-517-0467
NSN 5985-01-072-5896
NSN 6240-00-836-4980
NSN 6110-00-686-4685
NSN 6130-01-016-5455
NSN 5998-01-647-4888