Using this door gasket is easy. First, find the right spot on your Simpson or Electrolux front - loading washing machine and install the gasket. It's a straightforward process. When you've installed it, to keep it in good shape for a long time, take some talcum powder and gently rub it around the outside of the seal body. This will stop it from wearing out too fast when it rubs against itself. If you're ever unsure whether this gasket fits your machine, don't just guess. Contact us with your model number before you make the purchase. That way, you can be sure you're getting the right part. And remember, since it comes with a full guarantee, you can trust in its quality.