Seal & Design now offers the Hallite type 844 wiper. The double lip design of the Hallite Type 844 has a special feature of a flap on the external wiping lip which covers the gland housing. This flap prevents the water/slurry trap occurring which is so common with conventional wipers and thereby stops contamination from getting around the outside of the wiper.
The Hallite wiper showed its ability to clear surface frost/ice whilst operating at temperatures down to -45°c and also working in environments of 110°c radiated heat. See video below: