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 6610-01-256-7938
NSN 7035-00-931-9415
NSN 5975-01-537-0133
NSN 5945-00-117-3520
NSN 6135-00-782-6988
NSN 5930-00-277-4704
NSN 5935-01-613-1146
NSN 5835-01-332-2867
NSN 6150-01-179-7036
NSN 6685-01-296-0870
NSN 6135-00-962-4111
NSN 5855-01-651-1393