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 5998-01-261-0921
NSN 6240-01-653-3221
NSN 6240-00-832-6867
NSN 2925-01-190-7820
NSN 6610-01-184-3210
NSN 6620-01-492-8470
NSN 6110-01-467-9915
NSN 5990-01-032-1472
NSN 6620-01-525-5914
NSN 6145-01-311-8055
NSN 6105-01-330-6032
NSN 6110-00-393-1212