WC-565 IS A TWO PART, WATER CLEAR, COLORLESS ALIPHATIC BASED POLYUREATHAN ELASTOMER. IT IS RECOMMENED FOR USE WHENEVER A FLEXABLE PERMANENTLY TRANSPARENT ELASTOMER IS REQUIRED. WC-565 DOES NOT CONTAIN MOCA, TDI, OR MDA. THIS PRODUCT EXHIBITS EXCELLENT FUEL AND OIL RESISTANCE AS WELL.