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 4140-00-660-8699
NSN 2925-01-182-0227
NSN 5985-01-330-7786
NSN 6105-01-169-4787
NSN 6610-01-253-1449
NSN 6135-00-477-8847
NSN 5960-01-071-6267
NSN 6110-00-930-4818
NSN 4140-01-099-8096
NSN 4140-00-022-2893
NSN 6620-01-573-8003
NSN 5905-01-343-3172