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 6620-01-381-5482
NSN 6620-01-614-3591
NSN 6110-01-301-7382
NSN 5835-00-987-9341
NSN 6135-00-932-3136
NSN 5999-01-646-7221
NSN 5950-01-502-7333
NSN 6240-00-283-1263
NSN 5905-00-459-0888
NSN 6610-01-229-3679
NSN 5855-01-147-6024
NSN 5930-00-079-9901