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 5895-01-246-4250
NSN 5950-01-377-4610
NSN 5998-01-310-9858
NSN 5835-00-378-1429
NSN 5996-00-179-3804
NSN 5975-01-620-6321
NSN 4140-01-144-1450
NSN 6105-00-903-4010
NSN 2925-00-497-7808
NSN 5950-00-050-3070
NSN 6650-01-348-2407
NSN 5985-01-599-0302