WHAT IS BUNA RUBBER????

Buna rubber is a synthetic rubber that does not contain any natural rubber.  Buna rubber is used when the stamper uses a solvent based ink, "quick" dry ink, or solvent based cleaners on the stamp.  This is because the chemicals in the ink, reactivator, and cleaners will deteriorate, or break down the components in the commonly used basic rubber.  This break down can distort the die or cause bands to break apart over time.  On band stamps the chemicals will also distort or eat away at the plastic used for the wheels and that is why metal wheels are also required.

For regular ink used on paper and other porous material the regular rubber is just fine.  However, if the Buna type rubber is required you can be assured that you will also get a long lasting quality stamp.

Materials requested with Buna rubber have to be special made in a separate process than the normal rubber.  There is an up charge for the custom rubber & wheels as it is also considered a special order and cannot be returned.  It will also in most cases add a small delay to your order. 

In the event that you are unsure as to what kind of rubber to order, please don't hesitate to give us a call and we would be glad to answer any questions you may have.