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 7035-00-631-3782
NSN 5895-01-305-9571
NSN 6145-00-001-8271
NSN 5915-01-164-0315
NSN 6110-00-285-1895
NSN 5945-00-825-1503
NSN 5975-01-555-8413
NSN 5935-00-098-9135
NSN 5950-00-883-1000
NSN 5975-00-878-8178
NSN 5945-01-317-6445
NSN 6685-01-613-7938