I need to make a part out of rubber. The part is obsolete and cannot be purchased. I have one, but it has shrunk over the years and is now loose and it leaks water. The part is an isolation ring for a boat engine mount. It sits between two pieces of aluminum and is compressed by the two pieces. This allows some movement between the engine and the engine mount and it also seals out the water.
I am thinking that I can use the existing part to make a mold to build a new part out of urethane. I can add bulk to the existing part to make up for the shrinkage. Problem is, all I can find on the web is urethane for making the mold not the part. Does anyone have any insight into how I can do this? Fairly complex part, but I have one to make the mold from. The link is to a parts manual that shows this part. It is on page 14, of 20 and it is Item Number 8. It is OMC part number 322214or OMC393162. same part. Thanks everyone Dan