Loctite EA 9017

Overview

Loctite EA 9017 is a two-component structural epoxy adhesive designed for demanding assembly, maintenance and repair applications. It cures to a rigid, tough bond line that delivers high strength, good gap-filling and long-term durability on a wide range of substrates.

Once cured, Loctite EA 9017:

• Provides strong adhesion on properly prepared metals and composites

• Fills small gaps and surface irregularities without running

• Forms a tough, impact- and vibration-resistant joint

• Offers good resistance to typical oils, moisture and industrial environments

It’s a solid choice when you want to supplement or replace mechanical fasteners and improve stiffness and reliability in your assemblies.

Key Features & Benefits

• Two-part structural epoxy
  Resin and hardener react to form a rigid, high-strength adhesive for structural and semi-structural joints.

• Gap-filling, non-sag consistency
  Paste-like formulation stays where you apply it, including on vertical surfaces, and bridges machining marks and minor misalignment.

• Multi-substrate adhesion
  Bonds steel, aluminium, many coated metals, composites and selected engineering plastics (always pre-test critical plastics and finishes).

• Tough, durable bond line
  Designed to withstand vibration, impact and thermal cycling better than brittle adhesives.

• Room-temperature cure
  Cures at ambient temperature after mixing; in many processes, moderate heat (if allowed by the design) can be used to accelerate cure.

Typical Applications

Loctite EA 9017 is commonly used in:

• Metal and composite assemblies

  • Bonding brackets, ribs, stiffeners and inserts

  • Joining composite skins to metal or composite frames

• Industrial equipment & enclosures

  • Bonded covers, panels and machine guards

  • Frames, housings and bases exposed to vibration and handling

• Maintenance & repair

  • Rebuilding or reinforcing non-critical metal parts

  • Replacing or backing up welds, screws and rivets in assemblies

For safety-critical structures, always validate joint design, preparation and cure schedule with appropriate testing and approvals.

How to Use Loctite EA 9017

Step 1 – Surface preparation

1. Ensure all bonding surfaces are clean, dry and structurally sound.

2. Remove loose paint, rust, scale and weak coatings.

3. Degrease to remove oil, grease, cutting fluids and release agents.

4. For high-strength joints, light abrasion or grit blasting, followed by cleaning, is recommended.

Step 2 – Mixing

1. Bring both components to the recommended working temperature.

2. Mix resin and hardener at the specified mix ratio (by weight or volume).

3. Stir thoroughly, scraping sides and bottom of the container until the mix is uniform in colour and texture.

4. Avoid entrapping excessive air and respect the usable pot life – only mix what you can apply in time.

5. If supplied in dual cartridges, purge both sides, attach a static mixing nozzle, and discard the first small bead before use.

Step 3 – Application

1. Apply a continuous, even bead or layer of mixed adhesive to one or both surfaces.

2. Ensure full coverage of the bond area and allow enough material to wet the surfaces and fill minor gaps.

3. Assemble the parts within the adhesive’s working time.

Step 4 – Assembly & cure

1. Position parts accurately and apply light clamping or fixturing to maintain alignment and bond line thickness.

2. Do not over-clamp; aim for a thin but continuous bond line, not a starved joint.

3. Allow the adhesive to cure at room temperature until handling strength is reached.

4. If the design permits, moderate heat may be used to accelerate cure and reach full strength sooner.

Step 5 – Finishing

1. Remove excess uncured adhesive with a suitable solvent and clean cloth.

2. Once fully cured, adhesive can only be removed mechanically (scraping, sanding, machining).

3. Cured joints can typically be drilled, machined and painted as required.

Safety & Handling

• Avoid skin and eye contact with uncured resin and hardener; epoxies and curing agents may cause irritation or sensitisation.

• Use in a well-ventilated area and avoid breathing vapours or dust from machining cured material.

• Wear appropriate PPE: chemical-resistant gloves, safety glasses and protective clothing.

• Do not discharge uncured material into drains or natural waterways; dispose of waste in accordance with local regulations.

• Store components in their original, tightly closed containers in a cool, dry place away from heat and ignition sources.

Always consult the latest Safety Data Sheet (SDS) and technical data for Loctite EA 9017 before use.

FAQs

Q1: What is Loctite EA 9017 mainly used for?
Loctite EA 9017 is mainly used for structural and semi-structural bonding of metals and composites where high strength and gap filling are required.

Q2: Does Loctite EA 9017 cure at room temperature?
Yes. It is designed to cure at ambient temperature after proper mixing. Where allowed by the design, moderate heating can be used to shorten cure time.

Q3: Can EA 9017 replace welds or mechanical fasteners?
In some designs it can reduce or partially replace welds, bolts and rivets, but this must be confirmed by engineering analysis and testing. Many users combine adhesive bonding with fewer fasteners for redundancy.

Q4: Can Loctite EA 9017 bond plastics as well as metals?
It can bond many engineering plastics, but performance depends on the specific polymer and surface preparation. Low-surface-energy or very flexible plastics may need special treatment or a different adhesive. Always test your exact substrate.

Q5: How thick can the bond line be?
EA 9017 has good gap-filling capability, but very thick sections cure more slowly and may affect final properties. Design for a controlled bond line thickness according to your technical guidance.

Q6: Is the cured adhesive flexible?
Once cured, Loctite EA 9017 forms a rigid structural bond with some toughness for impact and vibration, but it is not a soft, highly flexible sealant.

Q7: How can a joint bonded with EA 9017 be disassembled?
Cured structural epoxies are difficult to remove. Joints typically must be cut, ground or machined apart, and, where allowed, gently heated to help release them. Plan service and repair strategies during the design phase.