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 5895-01-389-8429
NSN 5960-01-076-9930
NSN 6145-00-062-5701
NSN 6135-00-050-7189
NSN 5996-00-051-6667
NSN 6130-00-100-0175
NSN 6150-00-293-5293
NSN 5935-01-197-1485
NSN 6645-01-463-3441
NSN 6135-00-635-9187
NSN 6135-00-995-1089
NSN 5975-01-634-0678