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 6320-01-407-8663
NSN 5960-01-522-0391
NSN 5965-01-506-3320
NSN 5905-01-044-7445
NSN 6105-01-424-1940
NSN 5999-00-256-9366
NSN 5855-01-394-3688
NSN 6320-01-532-4026
NSN 5935-01-594-2922
NSN 5930-01-461-4777
NSN 5960-01-425-1454
NSN 2925-00-048-7172