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 6650-01-171-0779
NSN 5996-01-521-3234
NSN 6150-00-078-7064
NSN 5945-01-319-4714
NSN 6105-01-417-6277
NSN 6610-01-219-6836
NSN 5998-01-230-4448
NSN 5998-01-425-1510
NSN 5990-01-154-7296
NSN 6150-00-522-4909
NSN 4140-01-442-6442
NSN 5905-01-464-9183