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 6135-01-514-9327
NSN 5975-01-004-7966
NSN 6620-01-494-9858
NSN 5945-00-470-5080
NSN 6610-00-179-2197
NSN 6320-01-227-2648
NSN 5960-01-054-3752
NSN 7035-01-103-3342
NSN 5996-01-141-6916
NSN 5935-01-497-3844
NSN 6320-01-291-4870
NSN 6130-01-325-9268