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 6240-01-089-6149
NSN 6610-00-720-8775
NSN 6150-01-459-5726
NSN 5950-01-372-9036
NSN 6610-01-653-8859
NSN 6610-01-606-0380
NSN 6645-00-421-5287
NSN 5950-01-560-3828
NSN 5975-00-706-7087
NSN 5975-01-599-8496
NSN 5998-01-619-6041
NSN 5920-01-376-4422