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 5960-01-493-3948
NSN 5935-01-219-0907
NSN 2925-00-345-9557
NSN 4140-00-304-2803
NSN 2925-00-574-3883
NSN 5985-01-424-4394
NSN 5965-01-314-7333
NSN 6645-01-101-2877
NSN 6685-01-170-0974
NSN 5930-01-535-6535
NSN 6105-00-912-2725
NSN 6650-00-883-4790