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Constant Tension
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THERMAL FLEX ™ AND MICRO FLEX ™
Tridon Thermal Flex 820 Series (Ideal N/A)
Screw: 5/16" hex-head, non-slotted.
300 grade stainless steel.
Band, housing and spring: 1/2" design.
300 grade stainless steel.
Tridon Thermal Flex Lined 825 Series (Ideal N/A)
Screw: 5/16" hex-head, non-slotted.
300 grade stainless steel.
Band, housing, liner and spring: 1/2" design.
300 grade stainless steel.
Tridon Micro Flex 391 Series (Ideal N/A)
Screw: 1/4" hex-head, slotted. 410 stainless steel.
Band, housing and liner: 300 grade stainless steel.
Tridon Clamping Range
SAE Part No. Inches Millimeters
Sizes No Liner Liner Min. Max. Min. Max.
175 820-175 825-175 1 1 3/4 25 45
212 820-200 825-200 1 1/4 2 1/8 32 54
262 820-250 825-250 1 3/4 2 5/8 45 66
312 820-300 825-300 2 1/4 3 1/8 57 79
362 820-350 825-350 2 3/4 3 5/8 70 92
412 820-400 825-400 3 1/4 4 1/8 83 105
462 820-450 825-450 3 3/4 4 5/8 95 117
512 820-500 825-500 4 1/4 5 1/8 108 130
562 820-550 825-550 4 3/4 5 5/8 121 143
612 820-600 528-600 5 1/4 6 1/8 133 155
662 820-650 825-650 5 3/4 6 5/8 146 168
712 820-700 825-700 6 1/4 7 1/8 159 181
762 820-750 825-750 6 3/4 7 5/8 172 193
812 820-800 825-800 7 1/4 8 1/8 184 206
862 820-850 825-850 7 3/4 8 5/8 197 219
912 820-900 825-900 8 1/4 9 1/8 210 232
THERMAL FLEX
Thermal Flex
The captured helical spring design provides a continuous
load to compensate for hose compression and thermal
dimensional changes (cold flow).
Clamping Range
SAE Tridon Inches Millimeters
Sizes Part No. Min. Max. Min. Max.
4 391-004 1/4 5/8 6.3 15.7
5 391-005 7/16 11/16 11.2 17.5
6 391-006 7/16 25/32 12.2 19.8
8 391-008 1/2 29/32 15.5 23.1
10 391-010 9/16 1 1/16 14.2 26.9
12 391-012 11/16 1 1/4 17.5 31.7
MICRO FLEX
Micro Flex
Measurements in illustrations are in inches [millimeters]
We recommend a minimum of all 300 grade stainless steel clamps for marine applications.
For applications directly over galvanized steel, we recommend an intermediate layer of non-conductive material such as vinyl electrical tape.
N/A - Not Available