BRAND OVERVIEW
ACCL®
Anticorrosion Connector Lubricants (ACCL)
SantoLubes ACCLs (Anticorrosion Connector Lubricants) protect electrical contacts against corrosion without hindering electrical conductivity through electronic connectors. They are based on SantoVac PPE (Polyphenyl Ether) technology. Billions of contacts have been protected by ACCL and PPE products.
ACCL fluids contain solvents for easier application, form a highly stable non-spreading 15-to-20-micron protective film, protect connectors in aggressive environments, reduce insertion force, minimize wear, maintain low and stable contact resistance, and provide long-term protection against fretting and environmental corrosion.
Corrosion
protection
Low contact
resistance
Reduced
insertion force
Built for high-reliability connector protection
SantoLubes ACCLs are engineered to safeguard electrical connectors in the most demanding environments. Our advanced PPE-based formulations deliver exceptional corrosion protection and electrical performance for telecommunication, automotive, aerospace, instrumentation, and general-purpose applications — ensuring reliability where it matters most.
Telecommunications connectors
Automotive connectors
Aerospace connectors
Instrumentation systems
Precious metal contacts
Base metal contacts
ACCL® Product Range
ACCL-52T
Electronic Connector Lubricant
Protection against insertion damage, fretting corrosion, and environmental corrosion.
ACCL 53T
Electronic Connector Lubricant
Proven PPE technology, durable non-spreading film, protects wear and corrosion, conforms to Telecordia GR-78, GR-317 and GR-121.
ACCL-54T
Electronic Connector Lubricant
Protection against insertion damage, fretting corrosion, and environmental corrosion.
ACCL-7T
Electronic Connector PPE Fluid
Ready-to-apply formulation for life-of-device electronic components up to 150°C.
SantoLubes® OS-124
PPE-Derived Connector Lubricant
Exceptionally low volatility and strong resistance to heat, oxygen, radiation, and chemical attack.
SantoLubes® OS-138
PPE-Derived Connector Lubricant
Low volatility, heat resistance, chemical resistance, and compatibility with most metals, plastics, and elastomers.
Helpful Resources
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FAQ
Expert guidance and resources to help you find the right solution.
What is a connector lubricant and why do electrical contacts need one?
A connector lubricant is a specialized fluid applied to electrical contacts to protect them against corrosion, wear, and signal degradation — without interfering with electrical conductivity. Electrical connectors face two persistent threats: environmental corrosion, where moisture and contaminants attack the contact surface, and fretting corrosion, where micro-vibration causes repeated micro-movement between mating contacts, wearing through protective plating and building up insulating oxide debris. Both increase contact resistance and eventually cause intermittent or failed connections. A connector lubricant like ACCL® forms a stable protective film that blocks corrosion, displaces moisture, reduces friction during insertion, and maintains low, stable contact resistance over the life of the device.
What is ACCL® and how does it protect electronic connectors?
ACCL® (Anticorrosion Connector Lubricant) is a family of PPE-based fluids engineered to protect electrical contacts against corrosion without hindering conductivity. Built on SantoVac® Polyphenyl Ether (PPE) technology, ACCL® forms a highly stable, non-spreading protective film of 15 to 20 microns on the connector surface. That film protects contacts in aggressive environments, reduces insertion force, minimizes wear, maintains low and stable contact resistance, and provides long-term protection against both fretting and environmental corrosion. Billions of contacts have been protected by ACCL® and PPE products across telecom, automotive, aerospace, and instrumentation applications.
What is fretting corrosion and how does ACCL® prevent it?
Fretting corrosion is one of the leading causes of connector failure. It occurs when small vibrations or thermal cycling cause mating contacts to move microscopically against each other, wearing away protective plating and generating oxide debris that accumulates between the surfaces. This oxide buildup is electrically insulating, driving up contact resistance until the connection becomes intermittent or fails entirely. ACCL® prevents fretting corrosion by maintaining a durable lubricating film between the contact surfaces — the film reduces the friction that drives micro-movement, excludes the oxygen needed to form oxides, and keeps the contact interface clean and conductive. This is especially valuable in automotive and aerospace connectors subjected to constant vibration.
Are ACCL® products Telcordia compliant for telecommunications applications?
Yes. ACCL 53T conforms to Telcordia (formerly Bellcore) requirements GR-78, GR-317, and GR-121 — the industry standards governing the reliability and performance of telecommunications equipment and connectors. Telcordia compliance is a critical qualification for connector lubricants used in telecom infrastructure, where contacts must maintain reliable performance over decades of service in uncontrolled environments. For telecommunications buyers and specifiers, ACCL 53T provides documented compliance with the standards their applications require.
How do I choose the right ACCL® product for my connector application?
ACCL® product selection depends on your operating environment, temperature range, contact type, and application method. ACCL-52T and ACCL-54T provide protection against insertion damage, fretting corrosion, and environmental corrosion for general high-reliability connectors. ACCL 53T adds documented Telcordia GR-78, GR-317, and GR-121 compliance for telecommunications applications. ACCL-7T is a ready-to-apply PPE fluid rated for life-of-device protection up to 150°C. For applications demanding extreme stability, SantoLubes® OS-124 and OS-138 are PPE-derived lubricants offering exceptionally low volatility and resistance to heat, oxidation, radiation, and chemical attack, with broad material compatibility. SantoLubes application engineers can review your contact specifications and recommend the right grade.
Does ACCL® work on both precious metal and base metal contacts?
Yes. ACCL® formulations are designed to protect both precious metal contacts — such as gold and palladium-plated surfaces — and base metal contacts like tin, nickel, and copper alloys. Precious metal contacts benefit from ACCL®'s ability to prevent pore corrosion and fretting wear that can compromise thin plating layers, while base metal contacts rely on ACCL®'s film to block the oxidation and environmental corrosion they are far more susceptible to. This broad compatibility makes ACCL® suitable across a wide range of connector designs and cost tiers, from high-end aerospace interconnects to high-volume automotive and consumer connectors.
Will ACCL® connector lubricant interfere with electrical conductivity?
No. A common concern with applying any fluid to electrical contacts is that it might act as an insulator — but ACCL® is specifically engineered to protect contacts without hindering conductivity. The protective film maintains low and stable contact resistance because the lubricant is displaced at the actual points of metal-to-metal contact under normal mating pressure, while remaining in place across the surrounding surface to block corrosion and fretting. The result is reliable electrical performance combined with long-term corrosion protection — which is precisely why ACCL® and PPE products have been trusted to protect billions of contacts in mission-critical applications.
