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 5975-01-498-5711
NSN 5895-01-523-2120
NSN 5915-01-218-8924
NSN 2925-00-642-8854
NSN 5855-01-459-9254
NSN 6105-01-440-6241
NSN 5895-00-694-2081
NSN 5998-00-583-3356
NSN 6220-00-990-3239
NSN 6685-01-089-8141
NSN 6650-01-100-0933
NSN 6145-01-318-4774