In a message dated 7/24/99 4:38:05 PM Eastern Daylight Time, lmittel@ibm.net writes: << Silicone is a reddish color, while fluorosilicone is blue.They might be so coded in the automotive industry as well, but I don't know that. Cheers, Larry Mittell >> Yes, that is it. Most "silicone hoses I have seen in the aftermarket are blue. Javad