EVONIK CORPORATION › TEGO® FOAMEX 822 TEGO® FOAMEX 822 $0.00 TEGO® FOAMEX 822 is a compatible defoamer emulsion based on polyether siloxane technology. Good balance of compatibility and long-term effectiveness. Add To Cart Added! TEGO® FOAMEX 822 is a compatible defoamer emulsion based on polyether siloxane technology. Good balance of compatibility and long-term effectiveness. You Might Also Like TEGO® FOAMEX 7447 TEGO® FOAMEX 825 TEGO® FOAMEX 8030 TEGO® FOAMEX 883 TEGO® FOAMEX 3062