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 6645-01-473-3752
NSN 4140-01-413-0674
NSN 5990-01-248-5294
NSN 6610-01-386-7542
NSN 7035-01-268-0933
NSN 5990-01-553-6859
NSN 5950-00-396-3990
NSN 5895-01-261-9100
NSN 5985-00-192-4152
NSN 2925-01-459-8093
NSN 6105-00-185-1579
NSN 5945-01-600-6760