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 2925-00-288-1394
NSN 7035-01-523-8664
NSN 6650-00-590-9073
NSN 5990-00-518-3195
NSN 5950-01-472-2467
NSN 5935-00-959-1456
NSN 5999-00-412-9120
NSN 6135-01-186-4010
NSN 5920-01-429-2650
NSN 6610-01-517-1901
NSN 5996-01-412-5548
NSN 6685-01-534-7702