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 6150-01-463-8582
NSN 5985-01-213-7873
NSN 5950-01-168-1897
NSN 6130-01-577-1232
NSN 5960-01-197-4461
NSN 5905-00-013-0875
NSN 6220-01-502-0243
NSN 5915-01-146-3184
NSN 5855-01-100-3272
NSN 6130-01-537-6977
NSN 5835-01-399-5820
NSN 6320-01-607-1491