These 1/2" Power-Seal® Worm Gear Clamps are made of high quality stainless steel. The interlocking "square knot" design will not pull apart. This design enables higher sealing pressure even at lower applied torque ranges, such as installing with a screwdriver. Power-Seal Clamps are general purpose and suited for heater and coolant hoses, as well as air intake & bilge pump lines in corrosive and non-corrosive environments. They are available in a variety of stainless steel grades and finishes with 5/16 slotted hex head screw.
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Item #

Item Name

Screw Material

Minimum Clamp Size

Maximum Clamp Size

N/A Power-Seal® 3.312 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 3.312 in84.00 mm N/A 4.250 in108.00 mm
N/A Power-Seal® 3.562 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 3.562 in91.00 mm N/A 4.500 in114.00 mm
N/A Power-Seal® 3.562 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 3.562 in91.00 mm N/A 4.500 in114.00 mm
N/A Power-Seal® 3.625 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 3.625 in92.00 mm N/A 6.500 in165.00 mm
N/A Power-Seal® 3.625 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 3.625 in92.00 mm N/A 6.500 in165.00 mm
N/A Power-Seal® 4.125 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 4.125 in105.00 mm N/A 7.000 in178.00 mm
N/A Power-Seal® 4.125 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 4.125 in105.00 mm N/A 7.000 in178.00 mm
N/A Power-Seal® 4.125 Inch (in) Minimum Size Worm Gear Clamp N/A N/A 4.125 in105.00 mm N/A 7.000 in178.00 mm
N/A Power-Seal® 0.437 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 0.437 in11.00 mm N/A 0.781 in20 mm
N/A Power-Seal® 0.437 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 0.437 in11.00 mm N/A 0.781 in20 mm
N/A Power-Seal® 0.500 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 0.500 in13.00 mm N/A 0.906 in23.00 mm
N/A Power-Seal® 0.500 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 0.500 in13.00 mm N/A 0.906 in23.00 mm
N/A Power-Seal® 0.562 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 0.562 in14.00 mm N/A 1.063 in27 mm
N/A Power-Seal® 0.562 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 0.562 in14.00 mm N/A 1.063 in27 mm
N/A Power-Seal® 5.625 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 5.625 in143.00 mm N/A 8.500 in216.00 mm
N/A Power-Seal® 5.625 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 5.625 in143.00 mm N/A 8.500 in216.00 mm
N/A Power-Seal® 0.687 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 0.687 in17.00 mm N/A 1.250 in32 mm
N/A Power-Seal® 0.687 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 0.687 in17.00 mm N/A 1.250 in32 mm
N/A Power-Seal® 7.125 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 7.125 in181.00 mm N/A 10.000 in254.00 mm
N/A Power-Seal® 7.125 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 7.125 in181.00 mm N/A 10.000 in254.00 mm
N/A Power-Seal® 0.812 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 0.812 in21.00 mm N/A 1.500 in38.00 mm
N/A Power-Seal® 0.812 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 0.812 in21.00 mm N/A 1.750 in44.00 mm
N/A Power-Seal® 0.812 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 0.812 in21.00 mm N/A 1.500 in38.00 mm
N/A Power-Seal® 0.812 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 0.812 in21.00 mm N/A 1.750 in44.00 mm
N/A Power-Seal® 9.375 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 9.375 in238.00 mm N/A 12.250 in311.00 mm
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Product Catalog