Loctite 545 sealant is designed for high pressure hydraulic or pneumatic applications (seals up to 10,000 psi on a 1/2" fitting). Most hydraulic fittings seal mechanically (metal face to face) or with an O-ring, but Loctite 545 acts as an added sealant by filling in scratches and minor surface imperfections and prevent the fitting from loosening off from vibration. They contain no fillers or particles that could contaminate system fluids, foul valves, or clog filters. Loctite 545 can also be used for standard air breathing lines (i.e. sandblast or welding areas) but is NOT recommended for oxygen enriched systems such as diver's air line. For best results, clean all surfaces (external and internal) with a cleaning solvent and allow to dry. If a rapid cure time is required spray with Activator T7471 (N185-450) or N7649 (N180-450) and allow 1/2 hour to cure. Without a primer, allow 2 hours to cure properly. The temperature range is -54°C (-65°F) to +149°C (300°F). MSDS sheets are available at new-line.com. Loctite 5452 (N161-XXX) is the next generation of Loctite 545. It consists of a gel-like formula that offers even faster curing speed, reducing machinery downtime and allowing for hydraulic lines to be used almost immediately in the field.

Temperature Range: -54°C (-65°F) to +149°C (300°F)