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 6650-01-378-7875
NSN 6110-01-048-7103
NSN 6610-01-654-4685
NSN 5855-01-543-8175
NSN 5935-01-582-8744
NSN 6610-01-380-0315
NSN 5930-01-499-8531
NSN 5835-01-468-4210
NSN 5998-00-800-2837
NSN 5975-00-816-6119
NSN 5935-01-293-1317
NSN 5985-01-317-4463