Are WTA EJ25 gaskets made from multi-layer steel? | WTA Guide
Are WTA EJ25 Gaskets Made from Multi-Layer Steel?
If you’re searching for clear, quick facts about whether WTA EJ25 gaskets are manufactured using multi-layer steel (MLS), you’re in the right place. This article uses up-to-date engine sealing industry expertise to address common questions among professionals regarding gasket composition and performance, including keywords to help you locate the most relevant information.
WTA EJ25 Gasket Material – Quick Facts
- Multi-Layer Steel (MLS) Construction:
- WTA EJ25 gaskets are manufactured with advanced multi-layer steel (MLS) technology.
- MLS gaskets consist of two or more layers of embossed steel, typically treated with a proprietary coating for improved sealing.
- This construction method provides superior durability, thermal resistance, and sealing performance compared to composite gaskets.
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- Advantages of MLS Gaskets for EJ25 Engines:
- Withstand higher cylinder pressures and temperatures common in the Subaru EJ25 platform.
- Minimize the risk of combustion gas or coolant leaks, especially under high-stress or boosted applications.
- Excellent resistance to flange movement and micro-sealing failures due to the inherent flexibility of multiple layers.
- Industry-standard for performance, racing, and OEM replacement needs.
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- Why Use MLS for Engine Sealing?
- MLS gaskets maintain clamp load even as cylinder heads expand and contract.
- The coating on MLS sheets helps conform to surface imperfections, ensuring a reliable seal.
- Preferred gasket choice for modern aluminum and cast iron engine assemblies.
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- Installation Recommendations:
- Ensure all mating surfaces are clean, flat, and true before installation.
- Use torque specifications and tightening sequence as outlined by the engine manufacturer for optimal performance.
- MLS gaskets are not designed to be reused; always replace them during engine refreshes.
Key Takeaways for Professionals
- WTA EJ25 gaskets are indeed manufactured from multi-layer steel, meeting or exceeding industry standards for Subaru EJ25 engines.
- MLS technology offers proven benefits in durability, performance, and reliability where robust engine sealing is critical.
- When upgrading or servicing EJ25 platforms, MLS gaskets are highly recommended for best-in-class results.

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