EVONIK CORPORATION › SURFYNOL® DF 58 SURFYNOL® DF 58 $0.00 SURFYNOL® DF 58 is an effective defoamer concentrate based on polyether siloxane technology. Excellent foam knockdown. Quantity: Add To Cart Added! SURFYNOL® DF 58 is an effective defoamer concentrate based on polyether siloxane technology. Excellent foam knockdown. You Might Also Like SURFYNOL® DF 110D SURFYNOL® DF 75 SURFYNOL® DF 62 SURFYNOL® DF 178 SURFYNOL® DF 37