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 5990-00-288-1820
NSN 4140-00-703-0738
NSN 6320-00-115-0883
NSN 5960-00-906-2149
NSN 5950-00-102-4256
NSN 6150-01-013-6726
NSN 7035-01-261-9850
NSN 6110-01-297-3924
NSN 5930-00-343-6755
NSN 6240-00-117-9957
NSN 5975-01-214-3516
NSN 5930-00-119-7328