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 5999-00-004-9467
NSN 4140-01-230-1082
NSN 5920-01-063-1874
NSN 6620-01-044-3371
NSN 5935-01-441-5380
NSN 6110-00-493-8138
NSN 6220-01-634-0660
NSN 5835-00-432-7633
NSN 6610-01-653-2348
NSN 6240-00-940-8294
NSN 5960-01-425-1454
NSN 5999-00-766-4647