Instantly provides a water tight seal on both flat and curved surfaces. All RK2 flexible tank adapters are manufactured in a food grade silicone material that is safe for all aquatic life inside your aquarium displays. In addition, this silicone material will never get brittle or harden over time unlike the traditional rubber or PVC materials used with many adapters available within our industry. Buy with confidence knowing these fittings can be installed once and never need replacing!
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