OET10100011 - Oetiker 0811 Double Ear Clamp 5/16-7/16 Range

Industrial Grade Connection Assurance

The Oetiker 2-Ear Zinc-Plated Hose Clamp (SKU: OET0811) represents the industry standard for permanent, tamper-proof hose connections. Designed for demanding MRO and OEM applications, this clamp features a clamping range of 0.319 inches to 0.433 inches (approximately 8.1mm to 11mm), making it an ideal fit for 3/8-inch OD tubing and hoses often found in pneumatic systems, fluid transfer lines, and welding gas setups.

Unlike traditional worm-gear clamps, the Oetiker 2-ear design is a one-piece component that provides a concentrated clamping force. The "ears" of the clamp are crimped using standard jaw pincers, drawing the band tight around the hose. This deformation is permanent, providing a tamper-evident seal that cannot vibrate loose over time. The zinc-plated steel construction ensures durability and resistance to oxidation, making it suitable for workshop environments and machinery where moisture or mild corrosives may be present.

Engineered for Performance

One of the critical advantages of the 2-ear design is its ability to accommodate thermal cycling. As hoses expand and contract due to temperature fluctuations or pressure changes, the crimped ears act as springs, maintaining constant tension on the connection. This elasticity prevents the development of leaks that often plague rigid clamping methods. Furthermore, Oetiker manufactures these clamps with deburred edges, a crucial feature that prevents the metal band from cutting into the soft rubber or silicone of the hose, thereby preserving the structural integrity of the line.

For maintenance professionals, the visual aspect of the installation is a significant benefit. A properly crimped ear is visibly deformed, allowing for quick inspection protocols to verify that all connections in a system are secure. Whether you are assembling new machinery or repairing existing infrastructure, the OET0811 provides a cost-effective, high-reliability solution for small-diameter hose fastening.