Oetiker 16700091-100 Ear Clamp 3-13/16 in Stainless Steel

Product Description

The OETIKER 16700091-100 is a single-ear clamp designed for secure, permanent hose and tubing connections in fluid and pneumatic systems. It features a 7 mm band width and 0.6 mm wall thickness, with an inner ear width of 10 mm, and is formed from stainless steel for corrosion resistance in demanding environments. Ear clamps of this type are installed using a dedicated pincer tool that swages the ear closed, creating a uniform 360-degree clamping force around the hose. HVAC, plumbing, and fluid-system technicians rely on this style of clamp where a tamper-resistant, vibration-proof connection is required.

This ear clamp is suited for residential and light commercial applications where barbed fittings, push-on hose connections, or tubing joints require a low-profile, one-time-crimp fastening method. Typical installations include condensate drain lines, coolant hoses, pneumatic tubing, and similar fluid-handling assemblies. The 3-13/16 inch nominal size accommodates hose or tubing at that corresponding diameter range. Licensed plumbers, HVAC technicians, and mechanical contractors are the primary installers of this type of fastener.

Key Features

• Nominal size of 3-13/16 inches suits a specific hose or tubing outer diameter
• Stainless steel construction provides corrosion resistance in wet and chemically active environments
• 7 mm band width distributes clamping load evenly around the hose surface
• 0.6 mm band thickness balances strength and flexibility for clean ear closure
• 10 mm inner ear width is compatible with standard Oetiker pincer tooling
• Single-ear design delivers a permanent, tamper-resistant connection after installation

Compatibility

Designed as an OEM-style replacement or new-installation ear clamp for hose and tubing assemblies requiring a 3-13/16 inch nominal clamp diameter in HVAC, plumbing, and fluid-handling systems.

Installation Notes

Installation requires a dedicated ear-clamp pincer or clamp tool matched to the ear width — do not attempt to close the ear with pliers or generic crimping tools, as this can result in an uneven or failed seal. Shut off all fluid flow and depressurize the line before removing an existing clamp or installing a new one. Once the ear is swaged closed, the clamp is permanent and cannot be reopened without cutting it off. Follow applicable IPC or mechanical code requirements for the specific fluid system being serviced.