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 2925-00-720-3948
NSN 5996-01-386-9694
NSN 5910-00-903-6000
NSN 5935-01-421-5365
NSN 5965-00-839-8991
NSN 6620-01-184-9210
NSN 5960-01-144-9183
NSN 5930-01-560-2977
NSN 5996-01-177-2848
NSN 5895-01-027-1192
NSN 5975-01-288-7317
NSN 6320-01-504-3948