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 4140-00-074-4242
NSN 5835-00-148-9719
NSN 6110-00-553-6159
NSN 5945-01-618-0361
NSN 5950-00-989-9850
NSN 6650-00-716-7628
NSN 6105-00-585-4634
NSN 5960-00-960-6805
NSN 6220-01-578-5868
NSN 5835-01-497-5029
NSN 5985-01-473-1906
NSN 5895-00-857-0774