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 7035-01-361-8821
NSN 5925-01-007-2049
NSN 5920-01-443-3771
NSN 5835-00-794-7500
NSN 5999-01-010-3221
NSN 5985-01-381-1201
NSN 5960-00-842-8740
NSN 5945-01-619-8986
NSN 5950-00-255-2180
NSN 2925-00-391-0331
NSN 5950-01-129-0094
NSN 5999-01-367-2843