Band width: 9mm/12mm
Band thick: 0.6mm
Screw size: 7mm
Material: W2 201/301/304
Free running torque: 6 in-lbs (0.7 Nm)
Suggested installation torque: 30 in-lbs (3.5 Nm)
Description:
RockClamp German Type Hose Clamps are engineered according to the DIN 3017 standard. Featuring a non-perforated (smooth) internal band and flared edges, these clamps provide maximum protection for soft silicon or rubber hoses while ensuring a high-tension, leak-proof seal. They are the preferred choice for automotive, industrial, and high-pressure applications where reliability is critical.
The W2 German type hose clamp is a high-quality, durable clamping device designed for secure and reliable hose connections, typically used in automotive, industrial, and plumbing applications. Unlike perforated clamps, the W2 features a solid band without holes, providing even pressure distribution and reducing the risk of hose damage. Its band made from corrosion-resistant stainless steel material, it ensures long-lasting performance in harsh environments. The clamp is tightened using a screw mechanism, allowing precise adjustment to achieve the optimal sealing force. Its robust construction and leak-proof design make it ideal for high-pressure systems where a tight, secure fit is essential.

Germany hose clamp Material & Features:
W2 - Hosing and band stainless steel 201/301/304, screw carbon steel with zinc plated
Compared to W1, the band of Germany type hose clamp W2 is stainless steel, which does not rust, ensuring long-term durability and reliability. The material also provides high tensile strength, maintaining a secure grip under pressure without stretching or deforming.

Screw both yellow zinc or white zinc plate available.
Compared to W4, the screw of German type hose clamp is carbon steel with zinc plate, which provides a smooth surface, reducing friction during installation and allowing for easier tightening. It is also improves durability and extends the screw's lifespan, making it a cost-effective choice for applications requiring moderate rust protection.

The non-perforated band with clear threads features an edge-pressing process, effectively protecting the hose from scratches. It also ensures no cutouts in the clamp, guaranteeing a tight seal that prevents water or air leakage.
Key Features
Non-Perforated Band: The smooth underside and embossed thread design prevent the hose from being sheared or extruded during tightening.
High Clamping Force: The cold-formed offset housing provides high stability and superior torque strength compared to standard clamps.
Flared Band Edges: Specially rounded edges eliminate the risk of cutting into the hose material.
Short Housing Design: The compact worm-drive housing allows for even pressure distribution across the entire 360-degree circumference.
Full Material Range: Available in W1 (Zinc Plated), W2 (SS304 Band/Housing), W4 (All SS304), and W5 (All SS316 Marine Grade).
Dimension chart:
| 9mm/12mm german type hose clamp | ||||
| Part No | Dimension range |
Part No | Dimension range |
|
| GM9W212 | 8-12 | GM9/12W245 | 30-45 | |
| GM9W216 | 10-16 | GM9/12W250 | 32-50 | |
| GM9W220 | 12-20 | GM9/12W260 | 40-60 | |
| GM9W222 | 12-22 | GM9/12W270 | 50-70 | |
| GM9/12W225 | 16-25 | GM9/12W280 | 60-80 | |
| GM9/12W227 | 16-27 | GM9/12W290 | 70-90 | |
| GM9/12W232 | 20-32 | GM9/12W2100 | 80-100 | |
| GM9/12W235 | 23-35 | ... | ... | |
| GM9/12W240 | 25-40 | GM9/12W2200 | 180-200 | |
Germany hose clamp Application:
The Germany hose clamp W2 is widely used in automotive, industrial, and plumbing systems for secure and leak-proof hose connections. Its robust non-perforated stainless steel band and precise screw mechanism ensure reliable performance in high-pressure applications, including coolant systems, fuel lines, and hydraulic assemblies. The clamp's corrosion-resistant design makes it particularly suitable for harsh environments, such as marine, chemical processing, and outdoor machinery, while its smooth inner surface prevents damage to sensitive tubing. Ideal for both OEM and maintenance applications.

Package:small bag/box + outer carton + pallet

Why RockClamp?
Precision Engineering: Manufactured with advanced stamping and forming technology for consistent quality.
Proven Durability: Rigorous torque and pressure testing ensure long-term performance in harsh conditions.
Professional Customization: Support for custom branding (laser marking) and specialized packaging.
Fast Lead Times: Optimized production lines to meet urgent wholesale and OEM demands.