How to welde a profile? Discover our tutorial: soldering a joint in a frame or ring. Read more Shore hardness basics A few precautions necessary for accurately measuring the hardness of your seal! Read more Density Prodene materials, which are 100% recyclable, have an average density of less than 20% compared to other rubber elastomer materials. Read more Compression set Compression set measures the ability of the elastomer to return to its original position after compression. Read more Do you have a question or a specific request? Contact us