DEDE Engineered Combi Seals 30+ Years Expertise‌ Sealing Solutions

In mechanical systems, we often assume a seal is just a passive part—rubber,
maybe a spring, something that holds back oil and grease. But when a machine
moves in more than one way—rotation plus axial movement, speed plus pressure
fluctuation—a basic oil seal often falls behind.

That’s where the combi oil seal earns its keep. It’s not a fancy buzzword.
It’s a solution that’s been proven in heavy-duty equipment, energy
applications, and industrial robotics where the usual stuff just doesn’t last.

At its core, a combi oil seal is a hybrid. Two or more seal parts are brought
together—most commonly, steel reinforcement + oil-resistant rubber, or a more
advanced pairing: rubber + PTFE. The result is a compact seal unit that works
harder and longer in complex motion environments.

It’s About What the Seal Does—Not Just What It’s Made Of
Let’s skip the catalog specs for a second. What really matters is this:

It runs cooler.

It handles pressure spikes better.

It doesn't wear out the shaft.

It lasts longer in dirt, vibration, and heat.

The PTFE-based versions are particularly interesting. Because PTFE (commonly
known as Teflon) doesn’t stick, doesn’t absorb oil, and has a super low
coefficient of friction. That makes it ideal for systems with frequent start-
stop motion or high shaft speeds. Unlike rubber, it won’t heat up and degrade
quickly under movement.

At DEDE, we’ve worked hard on refining the contact zones in our combi seals.
For example, the rubber lip only lightly touches the shaft, just enough to keep
a seal but not enough to fight against motion. That way, there’s less torque,
less wear, and less risk of failure over time.

Where You’ll Really See the Benefits
These seals aren’t just “better”—they’re just more appropriate for certain
industries:

Minimum Order: 500 pieces

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