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 6620-00-904-2139
NSN 5985-01-139-3789
NSN 6645-01-386-6311
NSN 6130-00-949-9994
NSN 5950-01-533-2521
NSN 5835-01-468-6170
NSN 5945-00-499-3574
NSN 5925-01-603-3273
NSN 6220-01-222-0724
NSN 6220-01-338-3033
NSN 5920-00-871-1045
NSN 5935-01-500-7722