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 6220-01-169-4782
NSN 6135-01-290-1594
NSN 6240-00-977-0485
NSN 5910-01-044-5618
NSN 5855-01-461-8089
NSN 2925-01-532-0781
NSN 6610-01-186-6535
NSN 5985-01-407-8953
NSN 5960-01-541-9884
NSN 5925-01-611-1966
NSN 2925-01-503-6792
NSN 5895-00-382-9294