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 5910-01-328-6221
NSN 6135-01-386-5709
NSN 6240-00-433-2707
NSN 6620-00-079-0311
NSN 6610-01-442-3509
NSN 5855-01-623-0645
NSN 5835-01-104-5707
NSN 5855-01-476-0941
NSN 5950-01-479-4473
NSN 6135-01-050-3194
NSN 6650-01-533-7109
NSN 5996-01-302-8776