LOCTITE 638 is designed for welding cylindrical fittings, especially where the joint gaps can reach 0.25 mm. It works not only on active metals but also on passive substrates, showing a strong hardening performance. The product offers high temperature performance and good oil tolerance and tolerates small surface contaminants.Your benefitsHigh strength to all metals, including passive substrates (eg stainless steel).Ideal for shafts, gears, pulleys and similar cylindrical parts.Maximum. gap size: 0.25 mmOperating temperature range: -55 to + 180 ° CShear tensile strength in N / mm²:> 25Mounting steel: 4 minutes.Thixotropy: No.