FEP Tubing (Fluorinated Ethylene Propylene)

FEP Tubing (Fluorinated Ethylene Propylene) is the preferred material in the production of small diameter tubing of continuous lengths. While some temperature resistance is sacrificed with FEP (to 400º F), its chemical and dielectric properties are similar to those of PTFE. FEP tubing is a clear tubing that is an economical choice for applications requiring chemical resistance and broad temperature exposure. FEP Tubing offers excellent clarity which makes it ideal for sight glass/flow monitoring applications. FEP Tubing has a slightly higher coefficient of friction, lower continuous service temperature, and is more transparent then PTFE. FEP Tubing also has better gas and vapor permeability properties and excellent UV transmission ratings.

FEP Tubing comes in a wide range of standard sizes and custom sizes are available upon request. FEP Tubing is also available in coiled tubing that can be ordered in various sizes, lengths, special sizes and colors to meet your needs.

FEP Tubing Offers:

● Chemically inert to most industrial chemicals and solvents
● Non-flammable
● Available in coiled, convoluted and heat-shrink construction
● High thermal stability

FEP Tubing Applications:

Aerospace & Transportation Technology, Electronics, Components & Insulators, Chemical & Pharmaceutical Manufacturing, Food Processing, Environmental Sciences, Air Sampling, Fluid Transfer Devices, and Water Processing Systems.

FEP Fractional Sizes

O.D. (in)

I.D. (in)

Wall (in)

Nominal
O.D.

O.D. Tolerance
(in)

Wall Tolerance (in)

Working Pressure*
PSIG (bar)

Burst Pressure+
PSIG(bar)

Minimum Bend Radius (in)

3/34

1/32

0.031

0.094

+/- 0.004

+/- 0.004

480 (33)

2400(165)

1/2

1/8

1/16

0.031

0.125

+/- 0.004

+/- 0.003

360 (25)

1800 (124)

1/2

5/32

3/32

0.031

0.157

+/- 0.005

+/- 0.003

282 (19)

1412 (97)

1/2

3/16

1/8

0.031

0.188

+/- 0.005

+/- 0.003

231 (16)

1154 (80)

1/2

3/16

1/16

0.062

0.188

+/- 0.005

+/- 0.003

480 (33)

2400 (165)

1/2

1/4

3/16

0.031

0.250

+/- 0.005

+/- 0.003

168 (11.6)

840 (58)

1/2

1/4

5/32

0.047

0.250

+/- 0.005

+/- 0.003

263 (18)

1315 (91)

1

1/4

1/8

0.062

0.250

+/- 0.005

+/- 0.003

360 (24.8)

1800 (124)

3/4

5/16

1/4

0.031

0.313

+/- 0.005

+/- 0.003

132 (9.1)

359 (24.8)

1/2

5/16

3/16

0.062

0.313

+/- 0.005

+/- 0.003

282 (19.4)

1412 (97.4)

2-1/2

3/8

5/16

0.031

0.375

+/- 0.005

+/- 0.003

109 (7.5)

541 (37.3)

1

3/8

1/4

0.062

0.375

+/- 0.005

+/- 0.003

231 (15.9)

1154 (79.6)

8

7/16

3/8

0.031

0.438

+/- 0.005

+/- 0.003

92 (6.3)

459 (31.6)

12

7/16

5/16

0.062

0.438

+/- 0.005

+/- 0.003

195 (13.4)

973 (67.1)

4

1/2

7/16

0.031

0.500

+/- 0.006

+/- 0.003

80 (5.5)

398 (27.4)

2

1/2

3/8

0.062

0.500

+/- 0.006

+/- 0.003

168 (11.6)

840 (57.9)

4-1/2

9/16

1/2

0.031

0.562

+/- 0.006

+/- 0.003

70.3 (4.8)

352 (24.3)

5-1/2

5/8

9/16

0.031

0.625

+/- 0.006

+/- 0.003

63 (4.3)

315 (21.7)

3

5/8

1/2

0.062

0.625

+/- 0.006

+/- 0.003

132 (9.1)

659 (45.4)

4

11/16

5/8

0.031

0.688

+/- 0.006

+/- 0.003

57 (3.9)

285 (19.7)

8

3/4

11/16

0.031

0.750

+/- 0.006

+/- 0.003

52 (3.6)

260 (17.9)

6

3/4

11/16

0.062

0.750

+/- 0.007

+/- 0.003

108 (7.4)

541 (37.3)

12

7/8

3/4

0.062

0.875

+/- 0.010

+/- 0.003

92 (6.3)

459 (31.6)

16

1

7/8

0.040

1.000

+/- 0.010

+/- 0.003

80 (5.5)

398 (27.4)

1.1

1

0.062

1.100

+/- 0.010

+/- 0.004

57 (3.9)

285 (19.7)

1-1/8

1

0.062

1.125

+/- 0.015

+/- 0.003

70 (4.8)

352 (24.3)

1-1/4

1-1/8

0.062

1.250

+/- 0.015

+/- 0.004

63 (4.3)

315 (21.7)

1-3/8

1-1/4

0.040

1.375

+/- 0.015

+/- 0.004

57 (3.9)

285 (19.7)

FEP Metric Sizes

O.D.
(mm)

I.D.
(mm)

O.D./I.D. Tolerance (mm)

O.D.
(in)

I.D.
(in)

O.D./I.D. Tolerance
(in)

Working Pressure*
PSIG (bar)

Burst Pressure+
PSIG(bar)

Minimum Bend Radius (in)

4

2

+/- 0.11

0.157

0.078

+/- 0.004

360 (25)

1800 (124)

1/2

5

3

+/- 0.11

0.197

0.118

+/- 0.004

282 (19)

1412 (97.4)

1/2

6

4

+/- 0.13

0.236

0.157

+/- 0.005

231 (16)

1154 (79.6)

1/2

7

5

+/- 0.13

0.276

0.197

+/- 0.005

195 (13)

973 (67.1)

1-3/4

8

6

+/- 0.13

0.315

0.236

+/- 0.005

168 (11.6)

840 (57.9)

1-3/4

9

7

+/- 0.13

0.354

0.276

+/- 0.005

148 (10.2)

738 (50.9)

2-1/2

10

8

+/- 0.13

0.393

0.315

+/- 0.005

132 (9.1)

659 (45.4)

2-1/2

12

10

+/- 0.15

0.472

0.393

+/- 0.006

108 (7.4)

541 (37.3)

3-1/2

14

12

+/- 0.15

0.551

0.472

+/- 0.006

92 (6.3)

459 (31.6)

4

16

14

+/- 0.15

0.63

0.551

+/- 0.006

80 (5.5)

398 (27.4)

5-1/2

* This tubing has a safety factor of 5 to 1 (ratio of burst pressure to working pressure). This data is to be used as a guideline only. You should perform actual tests according to your specific application.

+ The following equation is for calculating burst pressure. The result from this equation is to be used as a guideline only. The calculation is at ambient room temperature. It does not factor steam pressure, altitude, etc.

B=Burst Pressure
T=Tensile Strength Values: FEP-3000 psi    PFA - 4000 psi    PTFE - 2500 psi     PVDF - 5000 psi     ETFE=6500 psi
1 bar = 14.504 ps

1001 Innovation Drive
PO Box 1707
Morganton, NC 28680
USAPhone:  +1 828 584 2600
Fax:  +1 828 584 2604

Copyright ©2021 Norell®

Name
Email
Message
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Please refresh and try again.