The Thetford Replacement Closet Flange Seal is designed for Electra Magic 80 Recirculating Toilets, Aqua Magic, Starlite, and Galaxy Toilets. Flange forms a lasting, watertight seal between the toilet and floor.• Compresses to form a watertight seal between toilet and floor• Made of rubber for a reliable, long-lasting seal• Thetford Part No. 33239 Compresses to form a watertight seal between toilet & floor Made of rubber for a reliable, long-lasting seal | Thetford Closet Flange Seal for RV Permanent Toilets