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 5985-00-225-8621
NSN 4140-01-568-2815
NSN 5920-01-011-6536
NSN 6620-01-094-3925
NSN 6610-01-435-5425
NSN 5998-01-152-0930
NSN 5985-01-060-0113
NSN 2925-01-271-2824
NSN 5945-01-223-2274
NSN 6320-01-029-4220
NSN 5950-01-540-7433
NSN 6645-00-300-6459