Embossed worm gear clamps meet or exceed the DIN 3017 standard. Sometimes called worm drive clamps, they have a general purpose non perforated band especially suited for clamping soft silicone hoses.
Murray embossed clamps are designed for silicone rubber and other soft hose to protect against shearing and fray. Material grade and sizes are stamped on the band. Currently available in all 304SS/W4 and in 316SS/W5 stainless steel grade materials.