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In terms of design, windshield wiper seals are typically made from durable materials such as rubber or synthetic compounds that can flex without cracking in cold temperatures and resist the sun's damaging UV rayswiper seals. They are designed to fit precisely around the base of the wiper blade, where it connects to the wiper arm. This precision is key; even a small gap can allow water to infiltrate and wreak havoc on the mechanical parts within.