EVONIK CORPORATION › TEGO® FLOW 425 TEGO® FLOW 425 $0.00 TEGO® FLOW 425 is a universal, siloxane-based flow and anti-crater additive. It is highly compatible and suitable for a broad range of coatings. Quantity: Add To Cart Added! TEGO® FLOW 425 is a universal, siloxane-based flow and anti-crater additive. It is highly compatible and suitable for a broad range of coatings. You Might Also Like TEGO® FLOW ZFS 460 TEGO® FLOW 375 TEGO® FLOW 370 TEGO® FLOW 300