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 5935-01-440-7068
NSN 5950-00-113-9268
NSN 5985-00-782-9605
NSN 5990-00-277-3763
NSN 5945-01-616-9065
NSN 5975-01-349-7525
NSN 5950-01-257-6843
NSN 4140-01-615-7625
NSN 6620-01-110-4620
NSN 6320-01-393-7022
NSN 6105-01-385-7917
NSN 6130-01-160-8615