Metal gaskets, particularly MLS designs, are constructed from multiple layers of stainless steel or other alloys, often coated with elastomers for enhanced sealing. Their primary strength lies in handling extreme pressures and temperatures, making them ideal for high-performance diesel and gasoline engines. For instance, GYA's MLS gaskets can withstand temperatures up to 600°C and pressures exceeding 200 bar, thanks to their robust structure that distributes stress evenly across layers.

In contrast, rubber gaskets (e.g., made from NBR or EPDM) and fiber gaskets (e.g., compressed non-asbestos fiber) rely on compressible, flexible materials. Rubber provides excellent elasticity and vibration damping, while fiber offers good chemical resistance. However, these materials are limited to lower temperature thresholds—typically 150-250°C for rubber—beyond which they may degrade, leading to leaks or failure.

The core difference boils down to rigidity versus flexibility. Metal gaskets excel in rigidity, providing superior load retention and resistance to blowouts in turbocharged or high-compression engines. At GYA, our metal gaskets feature precision-embossed beads that create multiple sealing lines, ensuring zero leakage even under thermal cycling. This makes them a staple in commercial vehicles and heavy-duty applications, where downtime costs are high.

Rubber and fiber gaskets, on the other hand, shine in applications requiring conformity to irregular surfaces. They are more forgiving during installation and better at absorbing vibrations in passenger cars or low-pressure systems. GYA's rubber gaskets, formulated with FKM for oil resistance, are perfect for valve covers or oil pans, where flexibility prevents cracking over time. However, they can suffer from compression set—permanent deformation after prolonged use—unlike metal's resilient structure.

When choosing between these, consider your engine's operating environment. For high-heat, high-pressure scenarios like Cummins or Volvo diesel engines, opt for metal gaskets to avoid failures that could lead to costly repairs. In milder conditions, such as standard passenger vehicles, rubber/fiber options offer cost-effectiveness and ease of use. At GYA, we recommend hybrid designs—metal cores with rubber coatings—for balanced performance, ensuring compatibility with OEM specifications.

In summary, while metal gaskets provide unmatched strength for demanding applications, rubber and fiber offer versatility for everyday needs. GYA's expertise ensures you get tailored solutions that minimize risks and maximize engine life. Contact us for a consultation on your specific requirements.