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 5985-01-168-6020
NSN 5985-00-086-9953
NSN 2925-01-507-4797
NSN 6320-00-674-1361
NSN 4140-01-265-3736
NSN 6685-01-388-2236
NSN 5855-01-548-4201
NSN 6110-00-231-3751
NSN 5975-00-784-7979
NSN 4140-01-386-5630
NSN 6620-00-273-8735
NSN 5855-01-392-3734