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 5910-00-173-5874
NSN 5999-01-468-0917
NSN 5996-00-303-4461
NSN 5998-01-369-3257
NSN 6135-01-341-3924
NSN 6645-00-135-7480
NSN 5935-01-338-6876
NSN 6685-01-437-3645
NSN 6650-01-273-3152
NSN 5925-01-424-1710
NSN 5960-01-389-9941
NSN 6220-00-291-3722