Skip to Content
Henkel Adhesive Technologies
Recent searches

      Henkel Adhesive Technologies
      Loctite Technology Cluster Brand for Product Detail Pages

      Instant adhesives

      LOCTITE® 4851

      Instant component bonding - low viscosity, flexible adhesive for medical devices

      This flexible cyanoacrylate adhesive offers near instant bonding while retaining flexibility once cured and fixed. It is ideal for flexing-and-bending applications in disposable medical device assembly.

      Technical (1)

      RoHS (1)

      Regulatory (1)

      Part no. (SKU/IDH):
      524540

      IDH Name:
      LOCTITE® 4851, 20 g Bottle

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

      Information

      LOCTITE® 4851 is a flexible, low-viscosity instant adhesive specifically formulated to provide flexible bondlines. It develops fixture strength in approximately 10 seconds and is suited for bonding metals, elastomers and plastics, including difficult-to-bond plastics (PP, PE, PTFE) when used with a primer such as LOCTITE® SF 7701. LOCTITE 4851 is tested to Henkel's ISO 10993 protocols for use in disposable medical devices.
      • Formulated to provide flexible bondlines
      • Assembles difficult-to-bond plastics when LOCTITE® SF 7701 primer used
      • Low viscosity
      • ISO-10993 biocompatible
      • Ideal for bonding porous or absorbent materials, e.g. paper, leather and fabrics
      • Product category:
      • Instant adhesives

      Technologies:

      • Cyanoacrylate
      • Agency approvals / certificates / specifications:
      • ISO 10993

       

      • Cure type:
      • Moisture cure

       

      • Key characteristics:
      • Viscosity: medium viscosity

       

      • Number of components:
      • 1 part

       

      • Physical form:
      • Liquid

       

      • Recommended for use with:
      • Acrylonitrile butadiene styrene (ABS),Metal: steel,Polycarbonate

       

      • Specific gravity, @ 25.0 °C:
      • 1.1

       

         

           

             

               

                 

                   

                     

                       

                         

                           

                             

                               

                                 

                                   

                                     

                                       

                                         

                                          How to use

                                            It is recommended to use the correct LOCTITE® cleaner for the surface to be bonded (such as LOCTITE® SF 7070) to degrease and clean surfaces prior to applying the adhesive.

                                            To improve adhesion on difficult to bond plastic surfaces, apply LOCTITE® SF 7701 to the bond area by brushing or dipping. Avoid applying excess primer. Allow the primer to dry.

                                            If cure speed is too slow, use activator LOCTITE® SF 713 (see cure speed vs activator graph in TDS). Apply activator to one bond surface by spray, brush or dipping (not primed surfaces). Allow the activator to dry.

                                            Apply adhesive onto one side/part.

                                            Assemble parts immediately. The parts should be accurately located as the short fixture time leaves little opportunity for adjustment. Bond should be held or clamped until the adhesive has fixtured.Hint: if necessary, excess product can be cured by activator LOCTITE® SF 713. Spray or drop activator onto excess product.

                                          FAQ

                                            LOCTITE® Medical Device Grade Adhesives have been tested to Henkel's ISO-10993 biocompatibility protocols, making them candidates for use in disposable medical devices. They are not intended for implants and (invasive) prostheses.

                                            ISO-10993 Biocompatibility Certificates of Test for LOCTITE® Medical Device Adhesives are available via our Medical Website or by contacting Henkel directly.

                                            Yes, CA’s should be stored in the refrigerator prior to opening, but DO NOT refrigerate them once they have already been opened. After opening, CA's should be used within 30 days for best performance.

                                            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.

                                            This is a result of stress cracking. Uncured liquid CA remaining on some plastic substrate (such as polycarbonate, acrylic, and polysulfone) in a stressed condition may cause the formation of cracks in the plastic. Some remedies for avoiding/minimizing stress cracking are closing the bond joint quickly, use reinforced grades of plastic, anneal parts, or speed the cure of the CA with accelerator (or light for light curing CA products only).

                                            This is called blooming. This often occurs when there is an excessive amount of product being applied. To avoid blooming, use proper ventilation, less product, lower humidity, use a primer/accelerator, or a low bloom product.

                                          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
                                          ⓒ 2024 Henkel Corporation. ALL RIGHTS RESERVED
                                          You are on a United States website