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 6105-00-314-0542
NSN 4140-01-545-2631
NSN 6610-00-841-8221
NSN 5945-00-401-8067
NSN 6145-01-459-9007
NSN 5990-00-371-6590
NSN 5915-01-608-4505
NSN 6645-00-633-3824
NSN 6240-00-894-4604
NSN 6110-01-597-6550
NSN 6685-01-492-5831
NSN 5895-01-347-0206