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 5975-00-137-2836
NSN 6240-00-299-9819
NSN 5996-01-426-8531
NSN 6240-00-858-0389
NSN 6650-01-204-7841
NSN 5935-01-226-9556
NSN 6645-00-256-4072
NSN 5945-01-291-7296
NSN 5985-01-435-9045
NSN 6110-01-400-4207
NSN 5930-00-379-6731
NSN 6610-01-336-2787