PEEK open sealing ring

At Kriloha Ltd., we understand that maintenance downtime is the hidden cost of industrial operations. Our PEEK Open Sealing Rings represent our engineered answer for “Rapid-Service-Security” and “Thermal-Expansion-Integrity.” As a leading manufacturer of customized polymer solutions, Kriloha has developed a specialized CNC fabrication process that ensures the “split” in the ring is machined with zero-clearance precision, minimizing potential leak paths while maximizing ease of installation.

The engineering of our open seal program is founded on Dimensional-Flexibility and Surface-Integrity. Unlike standard molded rings that can become brittle, our CNC-machined PEEK rings retain their inherent toughness and fatigue resistance. At Kriloha, we verify the “spring-rate” and gap-tolerance of every bespoke open ring, resulting in “Failure-Resistant” seals that adapt to your system’s dynamic movements without compromising the primary pressure barrier.

Manufacturing these advanced polymer components involves strict Gap-Tolerance Calibration, Thermal-Testing, and Purity Verification. We collaborate directly with your maintenance and engineering teams to process bespoke configurations—including diagonal, step-cut, or straight-cut joins tailored to your specific pressure requirements. By choosing Kriloha Ltd., you are investing in a “Future-Proof” manufacturing partnership that prioritizes your system’s uptime through superior material science.

Primary Use Cases

Piston & Rod Seals: Ideal for reciprocating compressors and pumps where the seal must be replaced periodically without dismantling the entire drive assembly.
Hydraulic Actuators: Used as guide rings or secondary seals in heavy-duty hydraulic cylinders subjected to extreme pressure spikes.
Oil & Gas Downhole Tools: Specialized sealing rings for drill strings and logging tools where rapid field maintenance and reliability are paramount.
High-Temperature Steam Systems: Open-style gaskets and seals for steam-jacketed valves and manifolds that undergo frequent thermal cycling.
Aerospace Environmental Controls: Lightweight, thermally stable seals for air ducting and cabin pressure systems.

Frequently Asked Questions

Why use an “Open” sealing ring instead of a continuous “Closed” ring?

Open rings are designed for “blind” installations or maintenance scenarios where a shaft cannot be removed. They allow for much faster replacement cycles and can handle thermal expansion in long-stroke applications better than some closed designs.

Does the “split” in the ring cause a leak path?

When designed correctly with a “step-cut” or “scarf-cut,” the overlap minimizes the leak path. In high-pressure systems, PEEK open rings are often used as “back-up” rings or in tandem with an elastomeric energizer to ensure a 100% bubble-tight seal.

Is PEEK safe for open seals in high-speed reciprocating pumps?

Yes. PEEK is highly wear-resistant and has a low coefficient of friction. Its natural self-lubricating properties ensure that the open ring slides smoothly over the shaft, reducing heat buildup and extending the life of the sealing surface.

How does PEEK handle the “spring-back” required for open seals?

PEEK has a high mechanical modulus (stiffness), which allows the open ring to exert a consistent radial force against the housing wall, ensuring it stays seated even during rapid pressure fluctuations.

Are custom gap styles available for high-pressure applications?

Yes. We specialize in precision CNC machining and can offer various join styles—including Butt-cuts, Angle-cuts, and Step-locks—depending on whether your priority is ease of installation or maximum sealing efficiency.