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 5990-01-261-2962
NSN 4140-01-375-4676
NSN 6130-01-173-2651
NSN 6320-01-125-3361
NSN 2925-01-500-3300
NSN 5835-00-764-4388
NSN 5945-00-399-5897
NSN 5985-01-604-9171
NSN 5950-01-179-3156
NSN 5945-00-839-1525
NSN 7035-01-432-2424
NSN 5935-00-582-1455