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 6240-01-421-4025
NSN 5910-00-900-6059
NSN 5985-01-312-4023
NSN 5996-00-086-9352
NSN 6620-01-317-7849
NSN 6240-01-399-8573
NSN 5915-01-134-2817
NSN 6110-00-581-4445
NSN 6685-01-608-5596
NSN 5975-00-819-7325
NSN 5935-00-523-8942
NSN 6130-00-142-9532