Sunloc Clamp Seal Ring

At Kriloha Ltd., we understand that modern industrial piping is moving away from the “bulky and heavy” towards the “compact and high-performance.” In environments where space is a luxury and pressure is a constant, the Kriloha Sunloc Clamp Seal Ring stands as the definitive solution for high-integrity joints. As a leading supplier of premium rubber seals and gaskets, Kriloha Gaskets manufactures Sunloc-style rings with the geometric precision required to turn a simple clamp into a fortress of pressure containment.

The Sunloc Seal Ring operates on a “Rib-to-Hub” sealing principle. Unlike a flat gasket that is crushed between two faces, the Sunloc ring is an internal seal. It features two outer “lips” or “ribs” and a central “stiffening” web. When the external clamp is tightened around the two hubs, the hubs are forced together, compressing the seal ring ribs. This creates an initial metal-to-metal interference seal. Once the system is pressurized, the fluid enters the internal diameter of the ring and pushes the ribs outward even harder against the hub seats. This Self-Energizing action ensures that the seal becomes more effective as the internal pressure increases.

Manufacturing a Kriloha Sunloc ring requires a masterclass in metallurgy and machining. Because the ring must “flex” to provide its spring-like recovery, we utilize vacuum-heat-treated forgings to achieve the perfect balance of yield strength and elasticity. To prevent “galling”—where the metal of the ring bonds to the metal of the hub—Kriloha applies specialized surface treatments. We offer Silver Plating, Molybdenum Disulfide (MoS2) coating, and PTFE-based Xylan finishes. These coatings act as a dry-film lubricant, ensuring that the ring can be installed and removed easily without damaging the expensive hub seats.

By choosing Kriloha Ltd., you are investing in a technology that prioritizes “Operational Speed.” A Sunloc-style clamp requires only two to four bolts, compared to the twelve or twenty-four bolts found on a standard flange. This makes it the ideal choice for maintenance teams who need to perform rapid turnarounds. Every Kriloha Sunloc Seal Ring is 100% dimensionally inspected and etched with a heat number for total traceability. Whether you are managing an offshore platform or a high-pressure refinery, Kriloha Sunloc Seal Rings provide the mechanical agility and pressure-tested security your facility demands.

Primary Use Cases

Offshore Production Manifolds: Ideal for space-constrained topside piping where weight reduction is a primary engineering goal.
High-Pressure Steam Injection: Reliable sealing for Enhanced Oil Recovery (EOR) systems subject to extreme thermal shocks.
Chemical Processing Plants: Used in high-pressure reactor loops and catalyst piping where frequent disassembly is required for cleaning.
Subsea Flowlines: Providing a robust, pressure-energized seal for underwater connectors that must withstand external hydrostatic pressure.
Refinery Hydrocrackers: Critical containment for high-pressure hydrogen and hydrocarbon streams at elevated temperatures.

FAQs

Is a Sunloc Seal Ring interchangeable with a Grayloc or Techlok ring?

Yes. The Sunloc design is functionally and dimensionally interchangeable with standard “rib-type” clamp seal rings used in most major clamp connector systems, provided the size codes match.

What does “Pressure-Energized” mean for this ring?

The T-shaped profile allows internal pipe pressure to act upon the inner walls of the ribs, forcing them outward against the hub. This means the sealing force increases as the process pressure rises.

Why does Kriloha coat these rings with silver or PTFE?

The coatings serve as high-pressure lubricants. They prevent “galling” or cold-welding between the metal of the ring and the metal of the hub, making installation easier and protecting the hub from scratches.

Can I reuse a Sunloc Seal Ring?

While the ring has excellent “spring-back,” it does undergo slight plastic deformation during installation. Kriloha strongly recommends using a new ring for every assembly to ensure a gas-tight, 100% reliable seal.

How do I select the right material for my Sunloc ring?

Generally, the ring material should match the chemical resistance of the piping. However, it must always be slightly softer than the hub material to ensure it acts as the sacrificial sealing element. Kriloha technicians can help you select the ideal alloy and coating for your specific media.