Clamp D Equals 9.5 15400022 Single Ear Stepless Hose Clamp with Insert

Single Ear Stepless Clamp with Insert Ring

The clamp D equals 9.5 is a single-ear stepless hose clamp from the Oetiker 154 series, fitted with a pre-shaped stainless steel insert ring. The insert bridges the ear gap and spreads compression almost uniformly around the full circumference. This design suits soft and hard rubber or plastic hoses where point loading would cause leaks.

The clamp band uses stainless steel 1.4301 / UNS S30400, and the insert uses 1.4310 / UNS S30100. The band measures 7 mm wide and the ear measures 5 mm wide. The clamping range covers 7.5 mm to 9.0 mm outside diameter, which matches the 09.5RER size reference. Corrosion resistance reaches at least 800 hours under DIN EN ISO 9227 salt spray testing.

Installation needs a side-jaw or end-jaw pincer designed for single-ear clamps. One tool stroke draws the lower radii of the ear together and deforms it permanently. The visible ear closure confirms a complete crimp. Maximum diameter reduction equals the ear width divided by pi, roughly 1.6 mm for this size. Deburred edges protect the hose surface during and after fitting.

The clamp carries no screw housing, so vibration cannot loosen the joint. The low-profile ear clears tight engine bays, pump housings and manifold runs. Typical duties include coolant, fuel, air, water and hydraulic return lines on vehicles, marine engines and industrial machinery. The part number 15400022 identifies this size in Oetiker catalogues.

Key Features

• Stainless Steel Band and Insert
  The band uses 1.4301 / UNS S30400 and the insert uses 1.4310 / UNS S30100 for chloride resistance.

• Pre-Shaped Insert Ring

  • Oval protrusion locates in the ear space
  • Bridges the ear gap for near-uniform radial compression
  • Thin-walled construction up to 0.3 mm thick
  • Suits soft and hard rubber or plastic hose

• Stepless Ear Closure
  A single tool stroke deforms the ear, and the visible closure confirms a complete crimp.

• 7.5 mm to 9.0 mm Range
  The 09.5RER size reference covers common small-bore coolant and fuel lines.

• Deburred Edges
  Barrel finishing removes shear burrs that could cut the hose wall.

• 800-Hour Salt Spray Rating
  Corrosion resistance meets DIN EN ISO 9227 at 800 hours or more.

• Tamper-Resistant Joint
  The permanent crimp cannot be undone without cutting the band.

Specifications

What’s in the Box

• 1 x 09.5RER single ear stepless clamp with insert

Why Choose This Clamp

• The insert ring spreads force around the hose and limits leak paths on soft rubber.

• Stainless steel on both parts handles coolant, fuel and saltwater exposure.

• The permanent crimp holds tension where vibration would loosen a screw clamp.

• The 7 mm band width suits small-bore lines with limited access.

• Deburred edges reduce hose damage during installation and service.

• The low ear height clears tight pump and manifold housings.

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