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 5960-01-411-1825
NSN 6105-01-278-9220
NSN 5915-00-349-2198
NSN 5996-01-444-1488
NSN 6610-01-112-0447
NSN 6240-00-672-2759
NSN 2925-01-390-7963
NSN 6685-01-029-1971
NSN 5915-01-463-2465
NSN 6320-00-925-0558
NSN 5985-01-020-8259
NSN 5996-01-315-6032