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 6645-01-400-2119
NSN 6620-01-391-7331
NSN 5975-00-486-8518
NSN 6135-00-128-1633
NSN 7035-01-538-7381
NSN 5910-01-195-1360
NSN 5960-00-231-3767
NSN 6645-00-209-5778
NSN 5910-00-359-3698
NSN 5950-01-136-5903
NSN 6150-01-436-9898
NSN 7035-01-432-2424