PTFE lined stailess steel expansion joints

  • 10:1000
  • 10:1000
PTFE lined stailess steel expansion joints


Ethylene offers several special Flexijoint and Flexarmor expansion joint configurations including:

Universal Expansion Joints
These units combine two Flexijoints with an intermediate PTFE lined spool piece: lateral movements are maximized to provide low spring rates; critical when mating to stress-sensitive graphite, FRP, glass, etc. process equipment.

Hinged or Pinned & Slotted Joints
The hinged connection between the flanges provide lateral support while allowing only angular movement of the bellows. Pinned and slotted units provide angular and axial movements with lateral support.

Gimbal Joints
Allows full angular freedom while limiting axial and lateral displacements.


Special pieces of specific or non standard size can be manufactured on request.
Nominal Diameter (mm/in. ): DN15-DN1600
Convolutions: 3 to 6
Working pressure: 0.6MPA to 1.6Mpa
Fatigue frequency: Above 5000 times
Operating temperature: Below 200degree

PTFE Teflon linded Stainless steel expansion joints
Nominal diameter Convolution Length (mm) Axial (mm) Lateral (mm) Angular (degree) Negative pressure Pressure (Mpa)
DN(mm) NPS(inch)
DN15 1/2 3 70 8 6 20 -0.1 0.4
DN20 3/4 3 70 10 6 20 -0.1 0.4
DN25 1 3 80 12 8 20 -0.1 0.3
DN32 1 1/4 3 80 14 12 20 -0.1 0.3
DN40 1 1/2 3 85 17 15 25 -0.1 0.3
DN50 2 3 95 20 20 25 -0.1 0.2
DN65 2 1/2 3 110 22 23 30 -0.1 0.2
DN80 3 3 115 24 24 30 -0.1 0.2
DN100 4 3 120 26 25 30 -0.1 0.1
DN125 5 3 130 29 25 30 -0.1 0.1
DN150 6 3 140 32 20 25 -0.1 0.1
DN200 8 3 150 40 20 25 -0.1 0.06
DN250 10 3 160 40 12 15 -0.1 0.06
DN300 12 3 180 40 12 10 -0.1 0.06

Ningbo T.C.I CO., LTD

Tel: 86-574-87928791 Country: China (Mainland)