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 5985-01-032-6251
NSN 5855-01-069-4742
NSN 4140-01-449-1826
NSN 5925-01-485-9235
NSN 5960-01-632-6576
NSN 6105-00-265-7545
NSN 5930-01-492-3938
NSN 5975-00-275-1962
NSN 5998-01-216-4880
NSN 5975-00-027-4598
NSN 6110-01-475-3229
NSN 6220-00-937-8050