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 5999-01-435-4381
NSN 5998-01-382-5474
NSN 5950-00-710-4477
NSN 6240-01-065-7551
NSN 5998-00-253-1745
NSN 5985-01-130-8252
NSN 5975-01-537-4310
NSN 6685-01-099-4046
NSN 6220-01-562-8996
NSN 5835-01-325-5677
NSN 6135-01-285-8807
NSN 5999-01-643-0086