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 7035-01-123-0085
NSN 5990-00-073-2676
NSN 2925-01-642-8954
NSN 6650-01-428-9958
NSN 6145-00-998-3579
NSN 5960-01-493-3948
NSN 6685-01-217-4240
NSN 5930-00-882-0253
NSN 5930-00-081-8782
NSN 5990-00-131-3269
NSN 6685-00-950-6127
NSN 7035-01-072-0611