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 6610-01-325-4157
NSN 5985-01-316-8193
NSN 6320-00-149-7570
NSN 5915-01-456-5374
NSN 5960-00-252-6274
NSN 6220-01-276-8269
NSN 5930-00-842-1326
NSN 5915-01-451-4332
NSN 6135-00-299-6918
NSN 5925-00-687-1625
NSN 6645-01-600-2080
NSN 5945-00-433-8081