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 5998-00-275-2145
NSN 5998-00-738-7731
NSN 6320-01-495-1244
NSN 6650-00-614-1711
NSN 2925-01-481-7170
NSN 6240-01-577-7170
NSN 5835-01-538-8080
NSN 5835-01-045-6371
NSN 6110-01-336-3997
NSN 5985-01-566-6667
NSN 5999-00-097-7629
NSN 5990-01-633-9503