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 2925-01-545-2717
NSN 6135-01-357-0621
NSN 5855-01-487-8872
NSN 5996-01-481-9626
NSN 5905-01-024-0164
NSN 6240-01-413-3035
NSN 5985-00-235-4424
NSN 6610-01-376-9199
NSN 5835-01-479-7908
NSN 4140-01-385-7697
NSN 5905-01-649-9485
NSN 5920-01-183-7938