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 6110-01-434-5562
NSN 5999-01-100-3918
NSN 5998-00-761-6508
NSN 5996-01-522-9470
NSN 6610-01-033-2402
NSN 6220-01-442-3931
NSN 5855-00-337-3679
NSN 6135-01-364-0667
NSN 5960-00-320-3093
NSN 5895-01-068-4764
NSN 6135-00-196-5267
NSN 5945-01-528-4749