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 5945-00-007-3933
NSN 6685-01-616-5832
NSN 6110-01-431-5770
NSN 5855-01-633-9619
NSN 6135-00-276-7625
NSN 5935-01-532-4249
NSN 6685-00-805-9269
NSN 5960-00-297-7099
NSN 5935-01-084-2953
NSN 6135-01-511-1975
NSN 5915-00-152-4016
NSN 6240-00-527-8614