Loctite 635 Retaining Compound 50ml

Loctite 635 Retaining Compound is a high-strength green retaining compound engineered for maximum efficacy in the bonding of cylindrical fitting parts. This industrial-grade adhesive permanently locks bushings and sleeves in housings on shafts, preventing costly loosening and leakage caused by shock and vibration. Whether you are securing rotor to shafts in fractional and subfractional horsepower motors or augmenting press fits, this premium dimethacrylate ester retaining compound provides a robust, leak-proof seal on all close-fitting metal surfaces.

Why Choose Loctite 635?

• High-Strength Permanent Bond: Cures when confined in the absence of air between close-fitting metal surfaces to prevent components from loosening under harsh shock and vibration.
• Augments Mechanical Fits: Perfect for enhancing slip-fitted, press-fitted, or shrink-fitted cylindrical assemblies.
• Slow-Cure Precision: Provides an extended working window, allowing extra time for the precise alignment of large or intricate parts before full cure.
• Industrial & Motor Applications: Ideal for heavy-duty use cases such as locking rotors to shafts in fractional and subfractional horsepower motors.
• Reliable Thermal & Chemical Resistance: Maintains a strong, dependable seal in operating environments up to 199°F (approx. 93°C).

Technical Specifications

• Product Type: Anaerobic Retaining Compound (1-part liquid)
• Strength: High
• Color: Green, Opaque
• Container Size: 50ml
• Viscosity: 2,000 mPa·s (cP) Brookfield
• Certifications: Meets Military Specification Mil-R-46082B; Tested to North America's ASTM D5363 (paragraphs 5.1.1, 5.1.2, and section 5.2)

Simple Application Instructions

1. Clean: For optimal results, clean all internal and external surfaces with a LOCTITE® cleaning solvent and let dry. If the material is an inactive metal or cure speed is too slow, spray with Activator 7471™ or 7649™ and allow to dry.
2. Apply:
   • For Slip Fitted Assemblies: Apply adhesive around the leading edge of the pin and the inside of the collar.
   • For Press Fitted Assemblies: Apply adhesive thoroughly to both bond surfaces.
   • For Shrink Fitted Assemblies: Coat the adhesive onto the pin and heat the collar sufficiently to create clearance for free assembly.
3. Assemble: Assemble the parts using a rotating motion (for slip fits) or at high press-on rates (for press fits). Do not disturb the components until sufficient handling strength is achieved. The formula cures under anaerobic conditions (confined between close-fitting metal surfaces).

Frequently Asked Questions (FAQ)

What is Loctite 635 used for?

Loctite 635 is a high-strength anaerobic retaining compound designed for bonding cylindrical fitting parts. It is specifically formulated to prevent parts like bushings, sleeves, and rotors from loosening or leaking due to continuous operational shock, vibration, and mechanical stress.

Can Loctite 635 be disassembled?

Yes, though it forms a high-strength permanent bond. Disassembly requires applying localized heat to the assembly to approximately 250°C, then disassembling the components while they are still hot.

Does Loctite 635 work on all materials?

Loctite 635 offers robust performance across close-fitting metal surfaces and substrates. However, it is not normally recommended for use on plastics (particularly thermoplastic materials where stress cracking could result). Always confirm compatibility before applying to plastic substrates.

Is Loctite 635 safe for all environments?

This product is not recommended for use in pure oxygen and/or oxygen-rich systems, and it should not be selected as a sealant for chlorine or other strong oxidizing materials. For safe handling and compatibility with aqueous washing systems, always consult the Safety Data Sheet (SDS).