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 5985-01-380-2612
NSN 6240-00-078-2360
NSN 5965-01-080-4021
NSN 5990-01-565-2226
NSN 6320-01-393-7022
NSN 5998-01-090-0433
NSN 5960-00-237-2655
NSN 5965-00-267-4173
NSN 5998-00-739-7994
NSN 5990-01-548-3711
NSN 6145-01-432-0088
NSN 5985-01-330-5583