Single-layer gaskets, typically made from a uniform sheet of metal or composite, rely on basic compression to seal. While simple and cost-effective, they are prone to uneven stress distribution, leading to warping or failure under thermal expansion. GYA's single-layer offerings are suitable for low-demand engines, but they lack the adaptability needed for today's turbocharged systems.

MLS gaskets, by contrast, consist of 3-5 thin steel layers, each engineered for specific functions: outer layers for sealing, inner layers for strength, and coatings for corrosion resistance. This layered approach, pioneered in racing engines and now standard in OEMs like Volvo, allows for precise control over sealing dynamics. At GYA, our MLS designs incorporate embossed beads—raised ridges that create multiple contact points, enhancing seal integrity even as engine components expand and contract.

The reliability edge of MLS comes from its ability to handle extreme conditions. In tests conducted in GYA's labs, MLS gaskets maintain seal pressure up to 30% better than single-layer under cyclic heating (from 20°C to 500°C). This reduces blowout risks in commercial vehicles, where engine loads fluctuate. Single-layer gaskets often fail due to fatigue cracks, but MLS's multi-layer redundancy distributes forces, preventing propagation.

Additionally, MLS gaskets offer better conformity to imperfect surfaces, such as slightly warped cylinder heads, without requiring excessive torque during installation. This minimizes assembly errors and extends gasket life—GYA customers report up to 50% longer intervals between overhauls. For heavy-duty applications like Cummins engines, MLS ensures consistent compression ratios, boosting fuel efficiency and power output.

While single-layer gaskets suffice for basic repairs, MLS represents the future of reliable sealing. GYA's MLS products are fully OEM-compatible, backed by IATF 16949 certification, and customized for your engine specs. If you're experiencing frequent leaks or performance drops, upgrading to MLS could be transformative.

In conclusion, MLS gaskets' layered design provides unmatched reliability, making them the preferred choice for professionals. Explore GYA's range to elevate your engine's performance today.