The #5.75 surplus rubber stopper is roughly 25mm (1") tall. Full specifications are below
Someone at the factory made them using the wrong mold. They are cast with #6 marking. They are smaller than a true #6, so they are being sold as a special.
There are: ~25mm/inch | |||
---|---|---|---|
Size | Height (mm) | Top Diameter (mm) | Bottom Diameter(mm) |
#5.75 | 25 | 31 | 25 |