Convoluted Tubing
FEP Convoluted Tubing
   
FEP Convoluted Tubing is available in Convo-Flon™ (see chart 1 below) or Convo-Flex™ dimensions similar to our PTFE Convo-Tex, (see chart 2 below) and operates in temperatures up to 400F/204C. It is ideal for applications where visibility or long lengths are required. Because FEP convoluted tubing is almost clear, it allows operators monitor and visually inspect the material passing through the tube. In addition, because FEP is a thermoplastic material, tubing coils can be supplied in much longer lengths than with the PTFE Convoluted Tubing.

If you need the attributes of PTFE temperatures (up to 500F/260C) and the clarity of FEP we also offer PFA. All of the sizes listed for the different varieties of convoluted tubing can be supplied in most of the resins we offer. Just ask us for assistance and we will be happy to guide you through the attributes and limitations of each material.
NOTE: The only difference between Convo-Flon™ and Convo-Flex™ are the dimensions. Key Benefits:
  • Extremely flexible
  • Chemical and corrosion resistant
  • Withstands 1,000+ hours of flex cycle testing
  • Long continuous lengths
  • Low refractive index
  • Handles temperatures up to 400F
Chart 1

FEP Convo-Flon™
 Convoluted Tubing

Order Size Standard Cuff O.D. "A" Standard Cuff Length "B" Wall Thickness "C" Min. Inside Diameter "D" Max. Outside Diameter Max. Outside Diameter "E"

**Min Bend Radius

INCHINCH MM INCHMMINCH MMINCH MMINCH MMINCH MMINCH MM
1/4 X 3/8
3/8 X 1/2
1/2 X 5/8
1/4
5/16
3/8
6.35
7.94
9.53
3/4
1
1
19.1
25.4
25.4
.020
.023
.025
0.508
0.584
0.635
.251
.364
.480
6.38
9.25
12.2
.265
.375
.500
6.73
9.52
12.7
.375
.500
.625
9.53
12.7
15.9
.625
.875
1.25
16
22
32
5/8 X 3/4
3/4 X 7/8
.800 X 1
1
1-1/4
1-1/2
25.4
31.8
38.1
2
2-1/2
2-1/2
50.8
63.5
63.5
.025
.025
.030
0.635
0.635
0.762
.609
.730
.800
15.5
18.5
20.3
.625
.750
.820
15.9
19.1
20.8
.750
.875
1
19.1
22.2
25.4
1.50
1.75
2.25
38
44
57
1-1/4
1-1/2
Contact Customer Service for actual dimensions.

** Minimum 36" length.

 

Chart 2

FEP Convo-Flex™
Convoluted Tubing

flexible tubing

**NOTE: Dimensions may vary from PTFE Convo-Tex

  A B C D E  
SIZE CUFF
I.D.
CUFF
LENGTH
MAXIMUM
WALL
THICKNESS
MINIMUM
INSIDE
DIAMETER
MAXIMUM
INSIDE
DIAMETER
MAXIMUM
OUTSIDE
DIAMETER
MIN.
BEND
RADIUS
CONVO
FLEX
INCH MM INCH MM INCH MM INCH MM INCH MM INCH MM INCH MM
4
5
6
1/4
5/16
3/8
6.4
7.9
9.5
3/4
1
1
19.1
25.4
25.4
.020
.023
.023
0.508
0.584
0.584
.251
.273
.364
6.38
6.93
9.25
.265
.281
.375
6.73
7.14
9.53
.405
.424
.530
10.3
10.8
13.5
.365
.500
.875
9
13
22
8
10
12
1/2
5/8
3/4
12.7
15.9
19.1
1
1 1/4
1 1/2
25.4
31.8
38.1
.025
.025
.025
0.635
0.635
0.635
.485
.609
.730
12.3
15.5
18.5
.500
.625
.750
12.7
15.9
19.1
.660
.780
.975
16.8
19.8
24.8
.625
1.50
3.50
16
38
89
16
20
24
1
1 1/4
1 1/2
25.4
31.8
38.1
2
2 1/2
2 1/2
50.8
63.5
63.5
.030
.040
.045
0.762
1.02
1.14
.975
1.21
1.49
24.8
30.7
37.8
1.00
1.25
1.53
25.4
31.8
38.9
1.26
1.54
1.94
32.0
39.1
49.2
2.25
2.50
3.00
57
64
76
32
40
48
2
2 1/2
3
50.8
63.5
76.2
2 1/2
3
3
63.5
73.2
73.2
.045
.065
.065
1.14
1.65
1.65
1.99
2.44
2.92
50.5
61.9
74.2
2.02
2.50
3.02
51.3
63.5
76.7
2.37
3.00
3.74
60.2
76.2
95.0
4.25
6.50
7.50
108
165
191
 
 
 
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