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 5935-01-505-8710
NSN 6685-00-728-4744
NSN 2925-00-203-8735
NSN 6130-01-494-8285
NSN 5910-00-526-8005
NSN 6105-01-437-9661
NSN 6240-01-543-3930
NSN 6150-00-127-5179
NSN 6620-00-147-6034
NSN 5905-00-363-9689
NSN 5855-01-243-2355
NSN 5985-00-083-6889