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 6320-01-382-9676
NSN 4140-00-307-2732
NSN 5996-01-555-7690
NSN 6610-01-605-1161
NSN 5920-01-021-5198
NSN 5998-01-475-2209
NSN 4140-01-066-4681
NSN 5920-01-612-7537
NSN 5925-00-170-4090
NSN 5835-01-440-5391
NSN 5950-00-248-6921
NSN 6320-00-468-8421