EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
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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.
Power-Seal® Worm Gear Clamps
Unit of Measure
1 2 3 

Item #

Item Name

Screw Material

Minimum Clamp Size

Maximum Clamp Size

15B000148-316M N/A Power-Seal® 1.062 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 1.062 in27.00 mm N/A 2.000 in51.00 mm
15B000148-3005M N/A Power-Seal® 1.062 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 1.062 in27.00 mm N/A 2.000 in51.00 mm
15B000149-316M N/A Power-Seal® 1.312 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 1.312 in33.00 mm N/A 2.25 in57.00 mm
15B000149-3005M N/A Power-Seal® 1.312 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 1.312 in33.00 mm N/A 2.25 in57.00 mm
15B000150-316M N/A Power-Seal® 1.562 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 1.562 in40 mm N/A 2.500 in64.00 mm
15B000150-3005M N/A Power-Seal® 1.562 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 1.562 in40 mm N/A 2.500 in64.00 mm
15B000151-316M N/A Power-Seal® 1.812 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 1.812 in46.00 mm N/A 2.750 in70 mm
15B000151-3005M N/A Power-Seal® 1.812 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 1.812 in46.00 mm N/A 2.750 in70 mm
15B000159-316M N/A Power-Seal® 1.875 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 1.875 in48.00 mm N/A 5.000 in127.00 mm
15B000159-3005M N/A Power-Seal® 1.875 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 1.875 in48.00 mm N/A 5.000 in127.00 mm
15B000152-316M N/A Power-Seal® 2.062 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 2.062 in52.00 mm N/A 3.000 in76.00 mm
15B000152-3005M N/A Power-Seal® 2.062 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 2.062 in52.00 mm N/A 3.000 in76.00 mm
15B000153-316M N/A Power-Seal® 2.312 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 2.312 in59.00 mm N/A 3.250 in83.00 mm
15B000153-3005M N/A Power-Seal® 2.312 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 2.312 in59.00 mm N/A 3.250 in83.00 mm
15B000160-316M N/A Power-Seal® 2.500 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 2.500 in64.00 mm N/A 5.500 in140 mm
15B000160-3005M N/A Power-Seal® 2.500 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 2.500 in64.00 mm N/A 5.500 in140 mm
15B000154-316M N/A Power-Seal® 2.562 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 2.562 in65.00 mm N/A 3.500 in89.00 mm
15B000154-3005M N/A Power-Seal® 2.562 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 2.562 in65.00 mm N/A 3.500 in89.00 mm
15B000155-316M N/A Power-Seal® 2.812 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 2.812 in71.00 mm N/A 3.750 in95.00 mm
15B000155-3005M N/A Power-Seal® 2.812 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 2.812 in71.00 mm N/A 3.750 in95.00 mm
15B000156-316M N/A Power-Seal® 3.062 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 3.062 in78.00 mm N/A 4.000 in102.00 mm
15B000156-3005M N/A Power-Seal® 3.062 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 3.062 in78.00 mm N/A 4.000 in102.00 mm
15B000161-316M N/A Power-Seal® 3.125 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 3.125 in79.00 mm N/A 6.000 in152.00 mm
15B000161-3005M N/A Power-Seal® 3.125 Inch (in) Minimum Size Worm Gear Clamp N/A 305 Stainless Steel (SS) N/A 3.125 in79.00 mm N/A 6.000 in152.00 mm
15B000157-316M N/A Power-Seal® 3.312 Inch (in) Minimum Size Worm Gear Clamp N/A 316 Stainless Steel (SS) N/A 3.312 in84.00 mm N/A 4.250 in108.00 mm
Unit of Measure
1 2 3