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 6620-00-730-8699
NSN 6645-01-348-1120
NSN 5945-00-325-8816
NSN 6220-01-381-1793
NSN 5910-00-411-8832
NSN 5985-00-045-4219
NSN 6130-01-448-8713
NSN 5835-00-501-2581
NSN 5975-01-633-0599
NSN 7035-00-369-6346
NSN 6150-01-483-1857
NSN 5930-01-382-9405