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 6620-01-412-4632
NSN 7035-00-574-4223
NSN 6110-00-387-3911
NSN 5920-00-238-4678
NSN 5960-00-083-2793
NSN 5895-00-518-4954
NSN 5996-00-958-7965
NSN 6320-01-600-0787
NSN 6685-01-198-5776
NSN 5920-01-435-8597
NSN 6220-00-205-2040
NSN 5950-00-495-5214