Hose Clamp Niczuk Obejma DUO 11/4 (41–46 mm) BK – adjustable stainless clamp for hoses and pipes

Obejma DUO 11/4 (41–46 mm) BK by Niczuk is an adjustable stainless hose clamp engineered to fasten hoses, pipes and duct connections with diameters between 41 and 46 mm. Its DUO design combines two clamping elements to ensure even pressure distribution around the circumference, while the black finish resists visible corrosion for applications where appearance and durability matter. The clamp is suitable for plumbing, HVAC, automotive and general repair contexts where a reliable mechanical fastening is required.

Advantages

The stainless-steel construction provides corrosion resistance and longevity in both indoor and outdoor environments. The adjustable range of 41–46 mm covers a common set of hose and pipe diameters, reducing the need for multiple fixed-size clamps. The DUO configuration delivers consistent clamping force and improved sealing compared with single-band alternatives. Its slot-and-screw tightening mechanism is compatible with standard hand tools, enabling quick installation and secure tightening.

Suitable for

• Securing flexible hoses to fittings in plumbing systems
• Fastening duct and ventilation connections in HVAC installations
• Clamping coolant or intake hoses in automotive repairs
• General workshop and maintenance tasks requiring adjustable clamps

Key specifications

• Material: stainless steel body with black surface finish
• Adjustable diameter range: 41–46 mm
• Design: DUO dual-band clamping configuration for even pressure
• Tightening method: screw/slot mechanism compatible with common screwdrivers or bits
• Application environment: suitable for indoor and outdoor use where stainless corrosion resistance is required

How to use

Position the clamp around the hose or pipe so that the clamping bands sit evenly over the connection area. Insert the hose onto the fitting or pipe end, then slide the clamp into place over the joint. Use a suitable screwdriver or bit to turn the screw clockwise until the clamp compresses the hose evenly and creates a secure mechanical seal; avoid over-tightening to prevent damage to the hose material. To remove or readjust, turn the screw counterclockwise until the clamp relaxes and can be slid off or repositioned.

Usage recommendations

For best performance, ensure mating surfaces are clean and free of debris before installation. Select the correct position on the hose—typically just behind the barb or fitting shoulder—and tighten until the hose is firmly held without distortion. Inspect clamps periodically in high-vibration or outdoor installations and re-tighten if necessary to maintain a secure connection.