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 5915-01-527-2088
NSN 5990-01-527-7640
NSN 5975-01-154-5643
NSN 6150-01-227-2488
NSN 5925-01-301-6698
NSN 5985-01-600-5053
NSN 5998-00-737-6260
NSN 6610-00-081-2365
NSN 6130-01-469-1245
NSN 7035-01-501-7259
NSN 6130-01-198-3770
NSN 5965-00-543-0264