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 6240-00-175-9104
NSN 6110-01-506-7679
NSN 6645-00-851-6654
NSN 6135-00-793-1809
NSN 5935-01-185-6100
NSN 6240-01-203-7625
NSN 6645-01-651-9562
NSN 5895-01-105-6194
NSN 5985-00-156-7335
NSN 6320-00-382-7825
NSN 5950-01-267-7148
NSN 6610-00-277-7206