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 6610-01-314-1611
NSN 5965-00-772-8024
NSN 5965-01-390-9249
NSN 6110-00-824-5764
NSN 6150-01-250-4918
NSN 5965-01-480-3096
NSN 5935-01-069-3456
NSN 6240-01-149-4861
NSN 5895-01-144-2629
NSN 5998-01-025-0120
NSN 5925-01-432-1698
NSN 5920-01-288-0145