Sermatech Ethylene
  Flexijoint® Expansion Joints, Bellows and Flexable Cuplings
 

The table that follows gives the neutral or "as-shipped" lengths of Ethylene's Flexijoint bellows as measured from PTFE flare faces to flare face.

Bellows can be shipped in either the extended or compressed positions upon request. Please contact Sermatech-Ethylene for technical support.

 

Neutral Lengths

Size

Number of Convolutions
2 3 4 5 6 7 8 9 10 11 12
1/2 1.61 2.17 2.68 3.23 3.78 4.33 4.84 5.39 5.94 6.50 7.06
3/4 1.61 2.20 2.72 3.27 3.82 4.37 4.92 5.47 5.98 6.56 7.13
1 1.73 2.32 2.91 3.50 4.06 4.65 5.24 5.83 6.42 7.00 7.59
1-1/4 1.77 2.36 2.95 3.54 4.17 4.76 5.35 5.94 6.54 7.13 7.72
1-1/2 1.81 2.40 3.00 3.62 4.21 4.80 5.39 6.02 6.61 7.25 7.88
2 1.89 2.52 3.11 3.74 4.37 4.96 5.59 6.22 6.85 7.47 8.09
2-1/2 2.13 2.80 3.54 4.25 4.92 5.67 6.38 7.05 7.80 8.50 9.19
3 2.20 2.91 3.62 4.37 5.08 5.83 6.57 7.28 7.99 8.72 9.44
4 2.28 3.07 3.82 4.57 5.35 6.10 6.89 7.64 8.43 9.19 9.94
5 2.41 3.22 4.03 4.84 5.83 6.44 7.25 8.06 8.84 9.66 10.44
6 2.53 3.38 4.19 5.03 5.88 6.72 7.56 8.41 9.25 10.09 10.94
8 2.75 3.66 4.59 5.50 6.41 7.34 8.25 9.16 10.09 11.00 11.94
10 2.97 3.94 4.94 5.94 6.91 7.91 8.88 9.88 10.84 11.84 12.81
12 3.19 4.25 5.31 6.38 7.44 8.50 9.56 10.63 11.72 12.81 13.88
14 3.38 4.47 5.59 6.72 7.84 8.97 10.09 11.19 12.31 13.44 14.56
16 3.69 4.91 6.13 7.34 8.56 9.81 11.03 12.25 13.47 14.69 15.94
18 4.00 5.34 6.69 8.03 9.34 10.69 12.03 13.38 14.72 16.06 17.41
20 4.16 5.53 6.94 8.31 9.69 11.09 12.47 13.88 15.25 16.63 18.00
24 4.66 6.22 7.78 9.31 10.88 12.22 14.00 15.53 17.09 18.63 20.19
28 5.12 6.89 8.54 10.31 12.00 13.74 15.43 17.20 18.86 20.63 22.40
30 5.63 7.53 9.41 11.31 13.19 15.06 16.94 18.84 20.75 22.66 24.56
32 5.63 7.53 9.41 11.31 13.19 15.06 16.94 18.84 20.75 22.66 24.56
36 6.31 8.44 10.53 12.63 14.75 16.88 18.94 21.06 23.13 25.25 27.31
42 7.00 9.38 11.69 14.00 16.38 18.69 21.06 23.38 25.69 28.06 30.38