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 5960-00-539-7914
NSN 5998-01-360-5898
NSN 5999-01-634-0576
NSN 5999-01-273-3927
NSN 2925-00-238-1668
NSN 5915-01-261-6754
NSN 6105-00-683-1000
NSN 6610-01-399-7613
NSN 6105-01-073-0611
NSN 5895-01-398-1057
NSN 5975-01-050-8114
NSN 6620-00-520-1909