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 5905-01-352-5824
NSN 5950-01-443-3321
NSN 6610-01-573-1106
NSN 5960-00-446-5040
NSN 6685-01-315-6984
NSN 5930-00-686-0482
NSN 6145-01-249-7728
NSN 6240-01-618-4065
NSN 2925-01-148-5810
NSN 5960-01-560-1958
NSN 5920-01-173-4108
NSN 6320-01-648-5538