There are two options to determine the size of your DIN 32676 fittings:

Option 1 | Measure the Inside Diameter (ID) of the tube end:

  • Utilizing a measuring calipers, take a measurement on the inside of the tube fitting
  • Note this measurement as the Inside Diameter of the tube fitting.
See the reference guides below to find your DIN 32676 fitting size.

Option 2 | Measure the Outside Diameter (OD) of the flange end:

  • Utilizing a measuring calipers, take a measurement at the flanged end which is the widest part of your fitting utilized by clamps.
  • Note this measurement as the OD of Flange End of the tube fitting.
  • Note: DIN 10, 15 & 20 have the same flange OD.
  • Note: DIN 25, 32 & 40 have the same flange OD.
  • To determine your size, also measure the Inside Diameter (ID) from step #1
See the reference guides below to find your DIN 32676 fitting size.

Next, use your Inside Diameter (OD) measurement to determine fitting size:

The flange size is not equal to the DIN fitting size. In order to determine the correct size, please refer to the measurements table or note the Inside/Outside diameters labeled in the illustration below.

DIN 32676 Size OD of Flange End (mm) ID of Tube (mm) OD of Tube (mm)
10 34mm / 1.339" 10mm / 0.393" 13mm / 0.512
15 34mm / 1.339" 16mm / 0.630" 19mm / 0.748"
20 34mm / 1.339" 20mm / 0.787" 23mm / 0.906"
25 50.5mm / 1.988" 26mm / 1.024" 29mm / 1.142"
32 50.5mm / 1.988" 32mm / 1.260" 35mm / 1.378"
40 50.5mm / 1.988" 38mm / 1.496" 41mm / 1.614"
50 64mm / 2.520" 50mm / 1.969" 53mm / 2.087"
65 91mm / 3.583" 66mm / 2.598" 70mm / 2.756"
80 106mm / 4.173" 81mm / 3.189" 85mm / 3.346"
100 119mm / 4.685" 100mm / 3.937" 104mm / 4.094"
125 155mm / 6.102" 125mm / 4.921" 129mm / 5.079"
150 183mm / 7.205" 150mm / 5.096" 154mm / 6.063"

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