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 5925-00-797-0860
NSN 5998-00-023-3844
NSN 5915-00-985-5053
NSN 6130-01-281-9587
NSN 6110-01-432-1269
NSN 5855-01-411-3360
NSN 5915-00-477-6565
NSN 5985-01-631-3956
NSN 5855-01-173-0808
NSN 6105-00-583-9958
NSN 6220-01-501-6430
NSN 6150-01-377-8722