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 6105-01-319-3984
NSN 5996-01-445-5528
NSN 4140-00-990-3311
NSN 5950-00-575-3547
NSN 6105-00-090-9495
NSN 5950-01-355-9831
NSN 6130-01-584-2393
NSN 5975-00-141-8513
NSN 7035-00-104-7613
NSN 6130-01-472-1748
NSN 5915-01-644-7096
NSN 5920-01-085-0976