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 2925-01-387-0870
NSN 5950-01-371-1296
NSN 5996-01-171-2132
NSN 5925-01-415-0261
NSN 5835-01-381-2683
NSN 5915-00-217-6517
NSN 6110-00-103-9358
NSN 5950-01-634-0677
NSN 5950-01-351-3357
NSN 2925-00-059-7991
NSN 5945-01-134-3941
NSN 5975-01-651-7160