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 5996-01-223-5896
NSN 5960-01-443-3067
NSN 5996-01-276-7069
NSN 5975-01-382-2957
NSN 5925-01-160-1737
NSN 5855-01-031-4729
NSN 5835-01-124-2942
NSN 6105-01-025-1497
NSN 6645-01-508-9074
NSN 6130-01-316-4791
NSN 6650-01-399-6141
NSN 5985-01-136-5243