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 6105-01-454-0159
NSN 6135-01-026-9960
NSN 5998-00-197-8821
NSN 5895-01-647-0644
NSN 5915-01-268-7328
NSN 6610-01-488-7408
NSN 5855-00-149-0766
NSN 6130-01-056-4204
NSN 5975-00-290-4285
NSN 6130-01-260-0781
NSN 6135-00-422-3967
NSN 5996-00-827-2094