EVONIK CORPORATION › TEGO® FOAMEX 883 TEGO® FOAMEX 883 $0.00 TEGO® FOAMEX 883 is a highly effective deaerator concentrate based on polyether siloxane technology. Good long-term effectiveness against foam. Add To Cart Added! TEGO® FOAMEX 883 is a highly effective deaerator concentrate based on polyether siloxane technology. Good long-term effectiveness against foam. You Might Also Like TEGO® FOAMEX 842 TEGO® FOAMEX 825 TEGO® FOAMEX 1488 TEGO® FOAMEX 845 TEGO® FOAMEX 800