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 6610-01-256-7938
NSN 6105-01-235-0860
NSN 5910-01-399-0255
NSN 6145-00-218-7831
NSN 6110-01-499-3068
NSN 5996-00-548-8762
NSN 4140-00-078-9357
NSN 6135-00-900-2139
NSN 5945-01-108-8894
NSN 6320-01-283-9370
NSN 5930-01-155-3124
NSN 5996-01-321-1559