John,
Last time I was in I was talking to Lynn and she said you guys were trying to find a supplier for the Dupont Teflon Silicone. Fastenal stores sell this product and you have two in Sprinfield. The part number you would take them is 4123726. The two address's for the Fastenals are: 2650 West Kearney and 2250 East Kearney. Hope this helps you guys out.
Thanks,
Brian