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 5835-01-327-0770
NSN 5905-01-304-9428
NSN 7035-00-003-7518
NSN 5935-01-174-0685
NSN 6105-00-404-2014
NSN 6135-01-141-4916
NSN 5835-01-412-6901
NSN 5965-01-337-0250
NSN 5985-01-072-5896
NSN 6150-00-872-4634
NSN 5965-00-888-2643
NSN 6610-01-347-3397