Gasket Cutting Tool/Punch

Please advise, what are tools called that are for making your own gaskets out of silicone rubber, fiber, etc..? If I remember correctly they look like a punch that has the movable point that sticks out for starting. I believe that they come in a set for standard sizing. The holes cut on the gaskets need to be more perfect than what one would get from using an exacto knife. I am speaking of hand tools or a die/punch set. What are they called? Thank you for your assistance!!

http://www.grainger.com/Grainger/wwg/productIndex.shtml

Here is a set for a bit less than $60. Individual punches at USA Bluebook are about $30 each.

Bob NH said:

http://www.grainger.com/Grainger/wwg/productIndex.shtml

Here is a set for a bit less than $60. Individual punches at USA Bluebook are about $30 each.

Click to expand...

You can't get to the page you want via a direct link, but go to Grainger's Home Page and search on "gasket punch" or Grainger's product code: 3ZH51.

gaskets

The most useful gasket cutter is a flat board with a bearing in the center. The cutter is a knife on the end of a bar that rotates in the bearing to cut a perfect circle. The bar can be adjusted for whatever radius you need for the inside and outside cut. But I have never seen a gasket that had to be more perfect than a X-Acto, or utility, knife could cut. Unless you do not have a steady hand.