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 5855-01-646-1585
NSN 5998-01-601-0154
NSN 5985-01-632-6609
NSN 6110-01-072-9370
NSN 5920-01-659-1708
NSN 6645-01-626-3651
NSN 6150-01-423-6322
NSN 6135-01-036-3495
NSN 5950-01-013-8697
NSN 5975-00-008-5772
NSN 5905-01-420-4381
NSN 6645-00-222-0471