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 6220-01-083-3092
NSN 2925-01-384-4139
NSN 5985-00-369-0649
NSN 5935-00-293-1863
NSN 5996-00-450-4807
NSN 6610-01-191-6500
NSN 6610-01-589-5146
NSN 5895-01-186-4368
NSN 5945-01-634-0588
NSN 2925-01-053-0886
NSN 5910-01-625-5332
NSN 6240-01-375-5862