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 6240-00-471-5399
NSN 5915-01-266-4600
NSN 5945-00-034-8719
NSN 5950-01-345-8650
NSN 6620-01-598-2271
NSN 6220-00-350-8204
NSN 5999-01-037-8645
NSN 5990-00-951-6927
NSN 5930-01-250-5001
NSN 2925-01-320-6512
NSN 7035-00-760-5479
NSN 5930-01-349-5943