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 5960-00-157-1383
NSN 6130-00-235-1000
NSN 5895-00-826-2988
NSN 5975-00-066-8071
NSN 5950-01-044-5704
NSN 6650-01-431-5438
NSN 6645-00-356-5705
NSN 5996-01-570-2796
NSN 6610-01-020-3764
NSN 4140-01-125-5187
NSN 5985-01-659-2521
NSN 6610-00-277-7206