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 6620-01-468-2795
NSN 5996-00-996-1021
NSN 6145-01-368-6165
NSN 5998-01-146-4367
NSN 5905-00-105-4639
NSN 6240-00-978-9752
NSN 5835-01-173-1578
NSN 6220-00-726-2744
NSN 6105-01-428-9648
NSN 6220-01-349-0486
NSN 5835-00-841-2650
NSN 5835-01-416-6455