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 6145-01-609-5234
NSN 5930-00-109-5943
NSN 5905-00-161-3460
NSN 2925-00-816-8765
NSN 6130-01-450-9406
NSN 6620-01-222-2568
NSN 5960-01-125-2356
NSN 2925-01-363-5978
NSN 6240-01-502-4233
NSN 7035-01-531-2273
NSN 6240-01-247-6212
NSN 4140-00-946-6478