Yes, it is available. Here are some tips: 1. Soak the suction cup part completely in warm water, let the suction cup rubber part soften, then dry the soaked suction cup hook with a paper towel, and install it. 2. Before sticking the suction cup bracket, be sure to put the bracket on clean the surface of the glass and press out the air in the suction cup hook when installing. The less air, the better the adsorption degree and the better the effect. So it is possible for you to apply the silicone grease on the back of the suction cup to keep the suction cup firm. Thanks.
would putting a light coating of silicone grease around the outer edge of the suction cup improve its ability to hold the vacuum of the suction cup?