Leden, where are you located? Will you be traveling to the United States by airplane? If so, I assume you would be flying home?
Finding CRC silicone won't be a problem at all. Transporting it back home will. You might want to read this:
http://www.tsa.gov/assets/pdf/prohibited_and_permitted_items_10-24-07.pdf
It's a brochure from the Transportation Security Administration (the US government agency that regulates airport security) which lists permitted and prohibited items for both carry-on and checked baggage for air travel. You will notice that aerosols are banned in both carry-on and checked baggage with a couple of exceptions. If you can convince an airport security officer that you need the CRC silicone for medical reasons, you might stand a chance. Otherwise, it will need to be in a 3 oz or smaller container, which you may include with your toiletries as per to the following rules:
1. All liquids, gels and aerosols must be in three-ounce or smaller containers. Larger containers that are half-full or toothpaste tubes rolled up are not allowed. Each container must be three ounces or smaller.
2. All liquids, gels and aerosols must be placed in a single, quart-size, zip-top, clear plastic bag. Gallon size bags or bags that are not zip-top such as fold-over sandwich bags are not allowed.
Each traveler can use only one, quart-size, zip-top, clear plastic bag.
3. Each traveler must remove their quart-sized plastic, zip-top bag from their carry-on and place it in a bin or on the conveyor belt for X-ray screening. X-raying separately will allow TSA security officers to more easily examine the declared items.
Just so you know, a 3 oz. aerosol container is not much bigger than a cigarette lighter, and I don't think CRC silicone is available in such a small size.
Sorry to be the bearer of bad news.
