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 6135-01-604-8739
NSN 6105-00-980-0461
NSN 6135-00-738-5571
NSN 6610-00-780-6779
NSN 5910-01-282-8746
NSN 5999-01-204-7809
NSN 5835-01-416-6455
NSN 6320-01-392-6922
NSN 6240-00-370-5862
NSN 5915-01-463-9241
NSN 6650-01-146-5000
NSN 5920-01-607-1661