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 5915-01-526-3712
NSN 5975-00-421-9774
NSN 6240-01-411-1418
NSN 5920-01-414-6983
NSN 5935-00-753-7895
NSN 5835-01-029-1702
NSN 5935-01-644-0647
NSN 5930-01-537-7000
NSN 5985-01-583-6507
NSN 6610-01-400-3880
NSN 5855-01-617-9037
NSN 4140-00-152-3923