Trident Marine 730-2120 Stainless Steel Constant Torque Hose Clamp Band ID - 5/8 2-3/8 to 3

The Trident Marine 730-2120 is a 304 stainless steel constant torque hose clamp designed to maintain a reliable, leak-free seal on marine hoses even as temperatures, pressures, and materials change over time. Unlike conventional worm gear or T-bolt clamps, this clamp actively compensates for dimensional changes rather than simply holding a fixed position.

Virtually all rubber hose compresses (cold flow) after a clamp is installed, which can result in a torque loss exceeding 80% of the original installation torque. Additionally, metal fittings and connections expand when a system heats up and contract as it cools. Standard passive clamps cannot account for these changes without manual re-tightening. The 730-2120 solves this problem with a unique worm gear Belleville spring washer assembly that automatically adjusts clamp diameter to compensate for hose and fitting movement — keeping the connection consistently tight.

Key Features:

• Band & Housing: 304 stainless steel, 5/8" wide band for broad surface contact
• Belleville Spring, Washers & Screw: 401 stainless steel for corrosion resistance and spring tension
• Hose I.D. Range: 2-3/8" to 3"
• Hose O.D. Range: 2.75" to 3.625"
• Recommended Torque: 30–70 in-lb
• Ideal for engine cooling hoses, exhaust hoses, and other marine plumbing applications subject to thermal cycling
• Available in a full range of sizes from 3/4" to 16" hose

The Trident Marine 730 Series constant torque clamp is a smart upgrade over standard marine hose clamps wherever hose connections are exposed to heat, vibration, or cold flow — ensuring your connections stay sealed without repeated maintenance checks.