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 6620-01-191-5934
NSN 5950-01-602-3025
NSN 2925-01-244-3016
NSN 5935-00-370-0040
NSN 5990-00-576-4882
NSN 5999-01-364-3466
NSN 5920-00-936-7565
NSN 6645-01-567-8282
NSN 6685-00-299-7864
NSN 5905-01-501-9465
NSN 5930-01-429-9157
NSN 6105-01-479-0060