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 6610-01-586-8990
NSN 5990-01-411-5930
NSN 5935-01-472-3265
NSN 6620-01-605-1465
NSN 5920-01-153-7487
NSN 6620-00-485-0542
NSN 2925-01-133-8128
NSN 5985-01-272-4116
NSN 6685-01-009-8690
NSN 6130-00-197-6385
NSN 6105-01-134-0455
NSN 5945-00-203-1295