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 5920-00-555-1877
NSN 6685-00-678-2948
NSN 2925-01-293-6266
NSN 5965-01-650-8399
NSN 6610-00-504-2839
NSN 5998-00-073-1539
NSN 5975-01-392-8472
NSN 6650-01-502-6761
NSN 5925-01-619-0270
NSN 6610-00-377-7956
NSN 5930-01-038-3482
NSN 6135-00-885-6003