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 5990-01-250-4198
NSN 6150-00-004-1225
NSN 7035-01-332-9582
NSN 5930-01-566-0202
NSN 5935-00-110-5535
NSN 6220-01-437-8992
NSN 6135-01-552-1568
NSN 5985-01-559-8216
NSN 6105-01-238-8691
NSN 5920-00-583-7104
NSN 5965-01-318-3945
NSN 5950-00-280-7825