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 6645-01-083-4759
NSN 5895-01-381-1976
NSN 5965-00-322-9933
NSN 5950-00-152-8984
NSN 5945-01-502-6921
NSN 5855-01-142-7530
NSN 5930-00-941-2862
NSN 5910-00-804-0510
NSN 5950-01-070-8382
NSN 5935-00-111-6257
NSN 5990-00-301-3386
NSN 5920-01-195-7563