Question: What is the “normal” travel for a button on a silicone keypad?
Answer: If the silicone’s button structure (or webbing) provides the actuation force then the travel should be about 0.04? to 0.05?. If there will be a metal dome under the button providing the actuation force then the travel should be 0.00″ to 0.01″.
Question: What hardness(or shore) should I use for my custom keypad?
Answer: The answer is different depending on how the actuation force is provided. If there is no metal dome under the button we typically recommend 50-55 shore A (think inner tube or door seal). If there is a metal dome under the button then we would recommend 60 shore A (think windshield wiper blade). Our Sample keypad has: 30 Shore A, 40 Shore A, 50 Shore A, 60 Shore A and 70 Shore A. Request our engineering sample silicone keypad so you can feel the different shores and decide which is best for your project.