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 5985-01-026-8955
NSN 5960-00-304-8668
NSN 5990-00-247-0975
NSN 5985-00-306-2044
NSN 5975-00-931-2745
NSN 6320-00-308-7386
NSN 5915-01-510-2296
NSN 6150-00-359-2019
NSN 6610-01-332-5126
NSN 5930-01-083-9975
NSN 5960-00-518-4704
NSN 6645-01-487-7693