Wilma Z Marthasville , MO September 22, 2017 Appliance: Whirlpool Refrigerator TT18DKXRQ01 Whirlpool Refrigerator Tt18dkxrq01: Door gasket was not sealing well enough. How to replace Fresh Food Door Gasket. Installed new door gasket. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes