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 5985-01-313-5253
NSN 5999-01-304-8176
NSN 5999-00-106-9884
NSN 5996-01-382-9710
NSN 5990-01-357-6175
NSN 6110-01-176-9266
NSN 6150-01-443-2647
NSN 5985-01-322-9168
NSN 5895-01-344-6136
NSN 6240-00-287-1988
NSN 6645-01-459-7788
NSN 6135-00-269-5843