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 2925-00-627-5397
NSN 6220-01-088-6604
NSN 6620-00-838-6954
NSN 6320-01-089-9086
NSN 5935-00-186-7760
NSN 6135-00-702-2772
NSN 5960-01-495-0859
NSN 5996-01-367-2081
NSN 5925-01-579-8704
NSN 5960-00-126-4729
NSN 6150-01-364-1023
NSN 4140-01-520-8584