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 5960-01-435-1167
NSN 6610-01-368-3269
NSN 5985-01-310-9105
NSN 6110-00-702-0635
NSN 6130-00-394-6555
NSN 5990-00-027-7508
NSN 5935-01-452-2725
NSN 5835-00-589-6300
NSN 5945-00-131-4684
NSN 6220-01-426-6922
NSN 6135-01-222-0703
NSN 5975-00-226-3531