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 5975-01-451-4192
NSN 6150-00-954-5722
NSN 6105-01-607-0381
NSN 6145-01-634-0388
NSN 6685-01-093-4071
NSN 6130-00-152-4266
NSN 6145-00-427-7201
NSN 2925-01-368-5773
NSN 6150-01-196-6073
NSN 5835-01-266-4382
NSN 6130-00-461-3318
NSN 7035-00-919-3381