Two of the most popular products in this range are typical examples of the improved formulation. LOCTITE® 638 and 648 are single component acrylic adhesives that are now able to tolerate minor surface contamination from various oils such as those used for metal cutting, lubrication, corrosion resistance and protection. This, together with their ability to withstand higher operating temperatures, considerably extends the application scope of these retaining compounds.

Hydroxyethyl Methacrylate, Acrylic Acid, Cumene Hydroperoxide, Dimethacrylate Ester, Hydroxyalkyl Methacrylate, Methacrylate Monomer, Methacrylic Acid, Polyglycol Dimethacrylate, Polyurethane Methacrylate Resin Festigkeit: Hohe Festigkeit, Fluoreszierend, Temperaturbeständig, Viskosität: Hohe Viskosität, Öltolerant

Product Range Selector (LOCTITE 638)

Approbation DVGW (EN 751-1) : NG-5146AR0619, Approbation WRAS (BS 6920) : 0511518, NSF P1 Reg No: 123010

Fluorescent, Résistance : Résistance élevée, Résistant aux températures, Tolérant aux traces d’huile, Viscosité Viscosité élevée Allow LOCTITE® 638 to develop full strength before subjecting to any service loads. This will usually take about 24 hours. Fluorescent, Oil Tolerant, Strength: High Strength, Temperature Resistant, Viscosity: High Viscosity If using on inactive metal or curing speed is too slow, use an activator spray such as LOCTITE SF 7471 or SF 7649. Allow it to dry.For slip fitted assemblies. Apply adhesive around the leading edge of the pin and the inside of the collar. Use a rotating motion during assembly to ensure good coverage.

For shrink fitted assemblies. Apply adhesive onto the pin. Heat collar to create sufficient clearance for free assembly. Hold together or clamp bonds until the adhesive has fixtured. It is recommended to use LOCTITE 7063 to degrease and clean surfaces prior to applying the adhesive Apto para Superficies Ligeramente Aceitadas, Fluorescente, Resistencia: Alta Resistencia, Resistente a la Temperatura, Viscosidad: Alta Viscosidad Para Piezas Montadas por Deslizamiento, Para cerrar las piezas cilíndricas de la conexión, Retenedor LOCTITE 638 is designed for the bonding of cylindrical fitting parts, particularly where bond gaps can approach 0.25 mm. Ideal for use where high dynamic forces or cyclic loading is expected, for eg: shafts, gears, pulleys and cylindrical parts that

How to use Loctite 638:

LOCTITE 638 is a high strength retaining compound. It is designed for the bonding of cylindrical fitting parts. The product is especially suited for use on narrow bond gaps, approaching 0.25 mm. It cures at room temperature when confined between close-fitting metal surfaces. The curing process occurs in the absence of air. Fixation cylindrique, Pour assemblages en jeu libre, Pour la fixation étroite de pièces cylindriques