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 6685-00-406-5756
NSN 5960-01-025-2526
NSN 5905-00-644-9983
NSN 6645-00-192-1152
NSN 6150-01-539-4838
NSN 5998-01-090-8332
NSN 6220-01-518-0572
NSN 5910-01-112-7430
NSN 6240-01-106-2447
NSN 6645-01-252-8870
NSN 5855-01-143-3183
NSN 5975-00-279-8693