K2 Single Round SeamClamp CF:x - 2002859

Introduction

The K2 Round SeamClamp CF:x SingleRail was developed by K2 Systems to make the installation of photovoltaic mounting systems on round standing seam or round seam profiles efficient, safe, and economical. It is an excellent fit for roof systems like Kalzip, Bemo, Aluform, and RIB-ROOF Evolution.

As part of the proven K2 mounting system, it enables a drill-free installation (force-fit) and avoids water penetration or corrosion risks on the roof covering. The combination of robust aluminum and high-quality stainless steel screws ensures durability and high material compatibility.

In numerous K2 roof systems, it is used as a seam clamp to attach the K2 SingleRail directly to the roof seam without the need for additional sheets or brackets. This reduces effort, installation time, and material costs.

The clamp is optimized for the K2 SingleRail system and integrates seamlessly into the overall structure, creating a homogeneous and stable load-bearing mounting system.

In terms of lightning protection and grounding, it can also be part of a well-thought-out solution—such as in conjunction with suitable grounding clamps or equipotential bonding measures (K2 lightning protection clamps). This ensures that your PV system remains both mechanically and electrically safe.

Product Features & Technical Advantages

The Round SeamClamp CF:x impresses with numerous practical features that make it ideal for solar mounting on round seam roofs:

• Force-fit connection without penetrating the roof skin
• Compatible with round seam profiles (Kalzip, Bemo, Aluform, RIB-ROOF Evolution)
• Opening width: 24 mm
• Material: Aluminum (clamp) combined with stainless steel A2 (screws)
• Lightweight: approx. 0.239 kg per piece
• Available in packaging units of 50 pieces/box or 1,500 pieces/pallet
• Seamless integration into the K2 SingleRail mounting system

Functional Description and Application

During installation, the clamp is positioned so that the gripping part encompasses the round seam, and the K2 SingleRail is securely tightened using a screw connection. The principle of force-fit connection creates a stable link between the clamp and the support profile without mechanically perforating the roof skin.

This eliminates the need for penetration elements and seals, reducing the risk of leaks and preserving roof integrity. At the same time, the use of stainless steel for the screws ensures corrosion resistance, especially in combination with aluminum.

The K2 Round SeamClamp CF:x is particularly suitable for pitched roofs with metal coverings, where traditional screwing is impractical or impossible.

Areas of Application and System Compatibility

This seam clamp is specifically designed for use with the K2 SingleRail System. It is used in the following areas:

• Pitched roofs with round standing seam profiles (e.g., Kalzip, Bemo)
• Metal roofing with round seam profiles
• Projects where penetration-free installation is preferred
• In combination with other K2 components, such as module clamps, grounding clamps, and mounting rails

In larger PV systems, it can be part of a continuous mounting frame that is both mechanically stable and electrically secured. K2 offers complementary components such as module clamps, connecting elements, and lightning protection solutions that integrate seamlessly into this clamping system.

Technical Specifications

• Clamp Material: Aluminum
• Screw Material: Stainless Steel A2
• Opening Width (Max. Seam Thickness)
• Weight (Unit): approx. 0.239 kg
• Packaging Unit: 50 pieces/box

Weight

Item Weight: approx. 0.239 kg