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 5910-00-406-4470
NSN 6620-01-175-3429
NSN 6145-01-559-8408
NSN 5985-01-087-2998
NSN 5985-01-442-6913
NSN 5998-00-241-6442
NSN 5910-01-295-3329
NSN 6150-01-047-8626
NSN 5905-00-409-6124
NSN 5996-01-498-2269
NSN 5925-01-173-1763
NSN 6110-01-364-2145