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 5910-01-624-3583
NSN 6110-00-873-3198
NSN 5965-01-370-1891
NSN 6645-00-243-9470
NSN 6645-01-519-3007
NSN 5910-00-758-6156
NSN 4140-00-211-3867
NSN 4140-01-478-9747
NSN 5985-00-314-0831
NSN 6610-01-351-0072
NSN 6685-01-235-3996
NSN 2925-01-503-6792