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 6240-01-487-5182
NSN 6220-00-556-2396
NSN 6130-00-601-6301
NSN 5855-01-178-6396
NSN 5996-01-354-6483
NSN 5835-01-310-8979
NSN 5925-00-081-9135
NSN 5895-00-628-2078
NSN 6610-00-421-8919
NSN 5935-00-293-1863
NSN 5925-00-286-8502
NSN 5945-00-597-8633