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 6220-01-583-9934
NSN 5855-01-222-1242
NSN 6110-01-501-5764
NSN 6620-00-185-1671
NSN 5975-01-379-4484
NSN 5895-01-562-1054
NSN 6645-01-459-7788
NSN 5950-01-050-5428
NSN 5999-00-456-0603
NSN 5835-01-362-0305
NSN 6320-01-312-3620
NSN 4140-00-189-0235