You might be surprised to learn that the seals inside your engine aren’t static. They’re dynamic components that can actually change size due to the fluids they interact with. This is where the interesting phenomena of seal swell and shrinkage come into play.
The Seal Shrinkage Culprits
Several types of base oils, used as the foundation of engine lubricants, have been known to cause seal shrinkage. These include:
– Polyalphaolefins (PAOs)
– Group III base oils
– GTL (gas-to-liquid) base oils
While these oils offer excellent performance characteristics, their potential to shrink seals can lead to leaks and potential engine damage.
Counteracting Shrinkage with Esters and Alkylated Naphthalenes
Thankfully, there are solutions to this problem: esters and alkylated naphthalenes. These compounds have the opposite effect of the aforementioned base oils, causing seals to swell slightly. By incorporating esters and alkylated naphthalenes into lubricant formulations, manufacturers can counteract the shrinkage and maintain the integrity of your engine’s seals.
The Importance of Balance
Finding the right balance between base oils, esters, and alkylated naphthalenes is crucial. Lubricant formulators carefully select the ratios of these components to ensure optimal seal performance and prevent both excessive shrinkage and swelling.
Key Takeaway
The next time you’re choosing an engine oil, consider the impact it can have on your engine’s seals. Opting for a lubricant that includes esters and alkylated naphthalenes can help prevent seal shrinkage, ensuring your engine stays well-sealed and performs at its best. Valorem Chemicals Pty Ltd, in partnership with Patech Fine Chemical and King Industries, is your trusted source for high-quality esters and alkylated naphthalenes to meet your formulation needs.
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