1. Durometer selection is also affected by skater weight, and temperature.2. Wheels for indoor use are hardest with a durometer of 88 97. 3. Contoured back-ups are routinely produced in a 90 durometer nitrile. 4. However, depending on the durometer of the wheels used, it can be slower. 5. If it does not penetrate at all, then the durometer is 100 for that scale. 6. He invented the first quadrant durometer in 1915 to measure the hardness of polymers and other elastomers. 7. The ASTM D2240 standard recognizes twelve different durometer scales using combinations of specific spring forces and indentor configurations. 8. Because of the low durometer of this material it is often used in low-torque peristaltic pumps. 9. Wheels for outdoor use are softer with a durometer of 82 87, and tend to wear more quickly. 10. The durometer would be inserted into the hole, allowing the meter to perform the test beneath the ball's surface.
