Oetiker 15500043-100 1-ear Clamp 2-5/8 Inches

Product Description

The OETIKER 15500043-100 is a single-ear stepless clamp designed for secure, permanent hose and tubing connections in HVAC, plumbing, and fluid-handling applications. The clamp uses a one-ear pinching design that, when crimped with the appropriate ear-clamp tool, creates a uniform 360-degree radial force around the hose. Manufactured from stainless steel, it resists corrosion in wet and chemically active environments. The band measures 7 mm wide and 0.6 mm thick, with a clamping range of 63.40 mm to 66.50 mm, making it suited for connections nominally sized at 2-5/8 inches. Licensed HVAC technicians, plumbers, and refrigeration mechanics install these clamps as a reliable alternative to worm-gear or spring-style clamps where vibration and long-term seal integrity are priorities.

This clamp is commonly used in residential and light commercial HVAC systems, plumbing supply lines, and fluid transfer assemblies where a low-profile, tamper-resistant connection is required. Typical applications include flexible refrigerant line connections, condensate drain assemblies, hydronic heating hose fittings, and automotive coolant hose installations. The nominal 2-5/8 inch size fits hose ends that fall within the 63.40 mm to 66.50 mm outside diameter range. This item is sold individually, with a minimum order quantity of 10 units.

Key Features

• Single-ear stepless design delivers consistent radial clamping force when crimped
• Stainless steel construction provides corrosion resistance in wet and chemical environments
• 7 mm band width distributes clamping load across the hose surface
• 0.6 mm band thickness balances flexibility with holding strength
• Clamping range of 63.40 mm to 66.50 mm suits 2-5/8 inch nominal hose connections
• Low-profile ear geometry reduces clearance requirements in tight installations

Compatibility

Designed as an OEM-style replacement or new-installation clamp for 2-5/8 inch nominal hoses and tubing connections within the 63.40 mm to 66.50 mm outside diameter range across HVAC, plumbing, and fluid-handling systems.

Installation Notes

Installation requires a dedicated ear-clamp pincer tool; standard pliers will not produce a consistent or code-acceptable crimp. Depressurize and drain any connected line before removing an existing clamp or fitting. Inspect the hose end for cuts or deformation before installing the new clamp, as the single-ear design is intended for one-time permanent use and cannot be reopened after crimping. Follow applicable codes such as the IPC or IFGC for hose and fitting connections in plumbing and gas-adjacent applications.