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 5960-01-449-5726
NSN 6240-01-390-6996
NSN 6240-00-120-0140
NSN 5985-01-152-6907
NSN 5985-01-655-3971
NSN 5996-01-272-7879
NSN 6110-01-483-5102
NSN 6610-01-391-6781
NSN 2925-00-629-1705
NSN 5950-01-261-6782
NSN 2925-01-484-8556
NSN 5960-01-023-2815