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Trilobe TPE boot from Trelleborg

Trelleborg's inboard trilobe TPE boot delivers reliable, cost-effective and more sustainable protection for vehicles, sealing lubricants in and keeping dirt and contaminants out. Its all-in-one design and thermoplastic elastomer (TPE) material make it compact and easy to assemble, while also being regrindable during the production process.
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Enhancing vehicle performance

Designed to withstand high temperatures
Inboard boots fit on the gearbox or engine side of the driveshaft. They are close to the engine and the exhaust line, which means they withstand exposure to temperatures: 165°C pick and 140°C constant—to withstand rotation, even at high speeds and temperatures.

Retention force from a single part
Trilobe TPE boots have an enclosed retainer which exerts a retention force onto balls and rollers, preventing them from coming out of the tulip. This patented, state-of-the-art process adds reinforced ribs to ensure an excellent clamping force on the tulip, creating a tighter, more reliable, more durable seal. 

The retainers for the balls and rollers reduce parts in the half shaft. This process also replaces two or three parts with one, delivering a unique thermoplastic elastomer that is more light-weight, compact, and recyclable at a lower cost. Additionally, the large and small diameter areas can be molded with special shapes to meet your exact requirements.
Function integration
Trilobe shape, roller retention, Ball Retainer
Perfect sealing
Compact Solution
Lighter part, less grease inside
Highly Flexible
0 to 30° angle
Trelleborg inboard boot

Inboard boots - Excellent driveshaft protection

Inboard boots protect the driveshaft from outside dust and keep grease inside. Having better retention of grease ultimately, helps reduce friction and improve fuel consumption.

By providing dynamic sealed protection from rotation in both the gearbox and the wheel, inboard boots deliver a smooth, consistent ride and long-lasting performance, even when the vehicle is driven at top speed.


Protecting gearboxes


Inboard boots fit on the gearbox side of the driveshaft. They are close to the engine and the exhaust line, meaning they are designed to withstand temperatures as high as 165°C while withstanding extremely high-speed rotation.
Simply better boots

  • Trelleborg inboard boots are designed to adapt to the dynamic movements and plunge of the driveshaft, resist rotation, and retain a perfect seal, even at high speeds.
  • Our inboard boots are built to handle the high temperatures: 165°C pick and 130°C constant—generated by proximity to the engine and exhaust line.
  • Our inboard boots can be compressed and extended by up to 50% to adapt to variant wheel movements and steering-shaft changes caused by poor roads.
A selection of Trelleborg's Trilobe CVJ Boots is displayed against a white background. Crafted from TPE, these boots offer enhanced reliability, a compact design, and effortless assembly, making them a superior choice for performance and efficiency.

Retention force on Trilobe

Trelleborg’s trilobe retention boot is a masterpiece of engineering, bringing together a series of innovations that result in the most flexible, resistant, and durable product available on the market.
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