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 5999-00-990-4754
NSN 5915-00-161-3158
NSN 5935-01-173-6843
NSN 5855-01-308-0955
NSN 5990-01-078-1294
NSN 2925-00-660-8131
NSN 5999-00-419-0244
NSN 5950-00-916-5023
NSN 5910-01-218-4922
NSN 6645-01-218-5234
NSN 6145-01-630-4646
NSN 5998-00-787-8350