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 6220-01-415-4854
NSN 5950-00-741-9941
NSN 5975-01-015-6197
NSN 5925-01-391-7718
NSN 5960-01-322-8417
NSN 6240-00-007-8538
NSN 6240-01-128-4906
NSN 2925-01-446-6523
NSN 5990-01-453-3552
NSN 5945-01-037-1072
NSN 5990-01-548-5979
NSN 6650-01-417-1797