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 6320-00-186-6452
NSN 6135-00-593-6831
NSN 5895-00-188-6798
NSN 5965-01-068-2714
NSN 5930-01-135-4057
NSN 5985-01-646-7012
NSN 6130-01-276-7780
NSN 6610-01-527-8006
NSN 5965-00-035-4556
NSN 5965-01-642-1140
NSN 6645-01-463-4314
NSN 6220-01-217-4096