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 6240-00-527-8614
NSN 5998-01-153-2236
NSN 5915-01-400-6125
NSN 6610-01-312-3032
NSN 6135-01-440-9412
NSN 5985-01-468-8270
NSN 6620-01-573-1952
NSN 6135-01-557-3351
NSN 5975-01-168-7643
NSN 5990-01-633-9503
NSN 5996-01-130-2992
NSN 6685-00-535-2673