Skip to Content
Henkel Adhesive Technologies
Recent searches

      Henkel Adhesive Technologies
      Loctite Technology Cluster Brand for Product Detail Pages

      Part no. (SKU/IDH):
      135479

      IDH Name:
      LOCTITE® 515, 50 ml Tube

      Gasketing sealants

      LOCTITE® 515

      Larger gap filling gasketing product for close-fitting rigid flanges

      This anaerobic-curing flange sealant for rigid machined metal flanges fills gaps up to 0.25 mm (0.01") and typically provides a 30-minute fixture time.

      Technical (1)

      RoHS (1)

      Regulatory (1)

      Part no. (SKU/IDH):
      135479

      IDH Name:
      LOCTITE® 515, 50 ml Tube
      Part no. (SKU/IDH) 135479
      LOCTITE® 515, 50 ml Tube

      Size Please make your selection 50 ml

      Packaging type Please make your selection Tube

      All marks used are trademarks and/or registered trademarks of Henkel and its affiliates in the US, Germany, and elsewhere.

      Information

      LOCTITE® 515 is a form-in-place anaerobic-curing flange sealant that cures when confined in the absence of air between close fitting metal surfaces. It seals close fitting joints between rigid metal faces and flanges and will flex with minor flange movements. It provides resistance to low pressures immediately after assembly of flanges, and is typically used as a form-in-place gasket for pumps, thermostats, compressors, transmission housing,s and axle covers. The product is fluorescent under UV light, allowing visual inspection of the bead.
      • For machined metal components
      • Forms a perfect seal
      • Gap fill up to 0.25 mm (0.01")
      • Form-in-place sealant
      • Fluorescent under UV for quality control
      • Product category:
      • Gasketing sealants

      Technologies:

      • Acrylates, anaerobic cure
      • Application method:
      • Dispense system; Manual

       

      • Applications:
      • Rigid assembly gasketing; Sealing

       

      • Chemical basis / base:
      • Methacrylate

       

      • Color:
      • Purple

       

      • Cure type:
      • Anaerobic cure

       

      • Fixture time:
      • 30.0 min.

       

      • Gap fill:
      • 0.25 mm

       

      • Key characteristics:
      • Fluorescent; For machined, rigid flanges; Strength: medium strength; Thixotropic

       

      • Lab shear strength:
      • 6.0 N/mm²

       

      • Number of components:
      • 1 part

       

      • Physical form:
      • Gel

       

      • Recommended for use with:
      • Metal: aluminum; Metal: steel

       

      • Storage temperature:
      • 8.0 °C - 21.0 °C

       

      • Viscosity, Brookfield - HBT, @ 25.0 °C:
      • 700000.0 mPa·s (cP) - 1700000.0 mPa·s (cP)

       

      • Viscosity, Brookfield - HBT, @ 25.0 °C:
      • 150000.0 mPa·s (cP) - 375000.0 mPa·s (cP)

       

         

           

             

               

                 

                   

                     

                       

                         

                          How to use

                            Apply LOCTITE® SF 790 to old gasket or gasket sealants and use a wood or plastic scraper to remove residues from flange surfaces. Remove burrs. It is recommended to use LOCTITE® SF 7070 to degrease and clean surfaces prior to applying the sealant.

                            If cure speed of LOCTITE® 515 is too slow due to passive metals or low temperature (below 5°C), use LOCTITE® SF 7649 activator. Allow to dry.

                            Apply a continuous bead of sealant onto one flange surface. Place the bead close to the inner rim of the flange and encircle all bolt holes. Small surface scratches will be filled by the adhesive. LOCTITE® 515 can also be applied by roller onto larger flanges.

                            Assemble flanges and tighten bolts as soon as possible. Wipe away any excess squeeze-out, as this will not cure when exposed to air due to the sealant's anaerobic curing properties.

                            Disassemble bolts with standard hand tools. Use jacking-screws, cast-on bosses or recesses to lift flanges apart.

                            Once disassembled, apply LOCTITE® SF 790 on old sealant and use a wood or plastic scraper to remove residues from flange surfaces.

                          FAQ

                            Use a LOCTITE® gasketing adhesive (silicone or anaerobic depending on your application) to: completely fill voids and surface variations; replace or augment traditional gaskets; overcome typical issues of over-torqueing bolts and gasket relaxation; as well as reducing inventory with a ‘one size fits all’ solution.

                            Yes, Henkel anaerobic adhesives become highly resistant thermoset polymers once cured, making them suitable for a vast number of applications. Consult the online product resources or contact our technical teams for further information.

                            LOCTITE® silicone adhesives such as LOCTITE® SI 5920 or LOCTITE® SI 5699 have been specially formulated for high temperature engine sealing applications. However due to the very high temperatures generated in the combustion chamber care should be taken when specifying liquid gasketing materials around the cylinder head or exhaust manifold. Please consult the Henkel technical team for further advice where necessary.

                            All necessary H&S measures and PPE (personal protection equipment) requirements can be found on the product material safety data sheet, all of which are available via our website.

                          Recently viewed products

                          Request a consultation

                          Unplanned downtime or lower plant productivity can prevent you from achieving the manufacturing excellence that you are looking for. Consult with our experts to find ways to make your machine more reliable and reduce unplanned downtime to save costs.
                          Contact an expert

                          Henkel Adhesive Technologies
                          Company
                          About us
                          Locations
                          Careers
                          News
                          Current Customer eShop
                          Sustainability
                          Help
                          FAQs
                          Find a TDS
                          Find a SDS
                          Find a distributor
                          Contact us
                          Resource center
                          Product search
                          Technical Library
                          Case studies
                          White papers
                          Webinars
                          Brochures
                          Social media
                          ⓒ 2025 Henkel Corporation. ALL RIGHTS RESERVED
                          You are on a United States website