ASTM D3295 • PTFE Tubing

This specification covers PTFE tubing, miniature beading and spiral cut tubing-manufactured from PTFE resin produced from dispersion. Five groups of PTFE tubing, miniature beading and spiral cut tubing, differentiated by size and type are presented. The groups are further subdivided into classes based on wall thickness: group 01 – tubing based upon the AWG sizes, group 02 – tubing based upon fractional inch sizes, group 03 – tubing based upon inner diameter and wall thickness, group 04 – tubing cut to form spiral wrap, and group 05 – miniature beading. The types are further differentiated in accordance with increasing wall thickness as follows: class 1 – light wall, class 2 – thin wall, class 3 – standard wall, class 4 – chemical tubing, and class 5 – heavy wall. The tubing and miniature beading shall be made of PTFE meeting the requirements prescribed. The melting point, specific gravity, weight loss, tensile strength, elongation, dielectric breakdown voltage, heat resistance, and dimensional stability shall be tested to meet the requirements specified.

ASTM D3295 Class 1 • Light Wall PTFE Tubing

SizeMinimum IDNominal IDMaximum IDNominal Wall
AWG 32
AWG 30.010.012.015.006 +/- .002
AWG 28.013.015.018.006 +/- .002
AWG 26.016.018.021.006 +/- .002
AWG 24.020.022.026.006 +/- .002
AWG 23.023.026.029.006 +/- .002
AWG 22.025.028.032.006 +/- .002
AWG 21.029.032.035.006 +/- .002
AWG 20.032.034.038.006 +/- .002
AWG 19.036.038.042.006 +/- .002
AWG 18.040.042.046.006 +/- .002
AWG 17.045.047.052.006 +/- .002
AWG 16.051.053.058.006 +/- .002
AWG 15.057.059.065.006 +/- .002
AWG 14.064.066.072.008 +/- .002
AWG 13.072.076.081.008 +/- .002
AWG 12.081.085.091.008 +/- .002
AWG 11.091.095.101.008 +/- .002
AWG 10.102.106.112.008 +/- .002
AWG 9.114.118.124.008 +/- .002
AWG 8.129.133.139.008 +/- .002
AWG 7.144.148.155.008 +/- .002
AWG 6.162.166.174.010 +/- .003
AWG 5.182.186.195.010 +/- .003
AWG 4.204.208.218.010 +/- .003
AWG 3.229.234.244.010 +/- .003
AWG 2.258.263.273.010 +/- .003
AWG 1.289.294.305.010 +/- .003
AWG 0.325.330.342.012 +/- .003

ASTM D3295 Class 2 • Thin Wall PTFE Tubing

SizeMinimum IDNominal IDMaximum IDNominal Wall
AWG 32.008.010.012.005 +/- .002
AWG 30.010.012.015.009 +/- .002
AWG 28.013.015.018.009 +/- .002
AWG 26.016.018.021.009 +/- .002
AWG 24.020.022.026.010 +/- .003
AWG 23.023.026.029.010 +/- .003
AWG 22.025.028.032.010 +/- .003
AWG 21.029.032.035.010 +/- .003
AWG 20.032.034.038.012 +/- .003
AWG 19.036.038.042.012 +/- .003
AWG 18.040.042.046.012 +/- .003
AWG 17.045.047.052.012 +/- .003
AWG 16.051.053.058.012 +/- .003
AWG 15.057.059.065.012 +/- .003
AWG 14.064.066.072.012 +/- .003
AWG 13.072.076.081.012 +/- .003
AWG 12.081.085.091.012 +/- .003
AWG 11.091.095.101.012 +/- .003
AWG 10.102.106.112.012 +/- .003
AWG 9.114.118.124.015 +/- .003
AWG 8.129.133.139.015 +/- .003
AWG 7.144.148.155.015 +/- .003
AWG 6.162.166.174.015 +/- .003
AWG 5.182.186.195.015 +/- .003
AWG 4.204.208.218.015 +/- .003
AWG 3.229.234.244.015 +/- .003
AWG 2.258.263.273.015 +/- .003
AWG 1.289.294.305.015 +/- .003
AWG 0.325.330.342.015 +/- .003

ASTM D3295 Class 3 • Standard Wall PTFE Tubing

SizeMinimum IDNominal IDMaximum IDNominal Wall
AWG 32.008.010.012.005 +/- .002
AWG 30.010.012.015.009 +/- .002
AWG 28.013.015.018.009 +/- .002
AWG 26.016.018.021.009 +/- .002
AWG 24.020.022.026.012 +/- .002
AWG 23.023.026.029.012 +/- .002
AWG 22.025.028.032.012 +/- .002
AWG 21.029.032.035.012 +/- .002
AWG 20.032.034.038.016 +/- .003
AWG 19.036.038.042.016 +/- .003
AWG 18.040.042.046.016 +/- .003
AWG 17.045.047.052.016 +/- .003
AWG 16.051.053.058.016 +/- .003
AWG 15.057.059.065.016 +/- .003
AWG 14.064.066.072.016 +/- .003
AWG 13.072.076.081.016 +/- .003
AWG 12.081.085.091.016 +/- .003
AWG 11.091.095.101.016 +/- .003
AWG 10.102.106.112.016 +/- .003
AWG 9.114.118.124.020 +/- .004
AWG 8.129.133.139.020 +/- .004
AWG 7.144.148.155.020 +/- .004
AWG 6.162.166.174.020 +/- .004
AWG 5.182.186.195.020 +/- .004
AWG 4.204.208.218.020 +/- .004
AWG 3.229.234.244.020 +/- .004
AWG 2.258.263.273.020 +/- .004
AWG 1.289.294.305.020 +/- .004
AWG 0.325.330.342.020 +/- .004

ASTM D3295 Class 4 • Industrial Wall PTFE Tubing

SizeFractionInner DiameterOuter DiameterWallBurst PressureBend Radius
1/321/32 x 1/16.031 +/-.004.063 +/- .004.0151560 psi / 73ºF.500
1/161/16 x 1/8.063 +/- .005.125 +/- .005.0301160 psi / 73ºF.500
3/323/32 x 5/32.094 +/- .005.156 +/- .005.030880 psi / 73ºF.625
1/81/8 x 3/16.125 +/- .005.188 +/- .005.030720 psi / 73ºF.750
3/163/16 x 1/4.188 +/- .005.250 +/- .005.030520 psi / 73ºF1.000
1/41/4 x 5/16.250 +/- .005.313 +/- .005.030400 psi / 73ºF2.250
5/165/16 x 3/8.313 +/- .005.375 +/- .005.030320 psi / 73ºF2.750
3/83/8 x 7/16.375 +/- .005.438 +/- .005.030280 psi / 73ºF4.000
7/167/16 x 1/2.438 +/- .005.500 +/- .006.030240 psi / 73ºF4.000
1/21/2 x 9/16.500 +/- .006.563 +/- .006.030220 psi / 73ºF5.000
9/169/16 x 5/8.563 +/- .006.625 +/- .006.030200 psi / 73ºF5.500
5/85/8 x 11/16.625 +/- .006.688 +/- .006.030180 psi / 73ºF6.250
11/1611/16 x 3/4.688 +/- .006.750 +/- .006.032160 psi / 73ºF6.500
3/4.750 +/- .006.830 +/- .006.040180 psi / 73ºF8.000
7/8.875 +/- .006.965 +/- .006.045180 psi / 73ºF12.000
11.000 +/- .0101.100 +/- .010.050160 psi / 73ºF18.000
1 1/81.125 +/- .0151.215 +/- .015.045192 psi / 73ºF
1 1/41.250 +/- .0151.340 +/- .015.040173 psi / 73ºF
1 1/21.500 +/- .0151.580 +/- .015.040129 psi / 73ºF

ASTM D3295 Class 3 • Heavy Wall PTFE Tubing

SizeFractionInner DiameterOuter DiameterWallBurst (psi)Bend Radius
3/161/16 x 3/16.063 +/- .003.188 +/- .005.0621560.250
1/41/8 x 1/4.125 +/- .005.250 +/- .005.0621500.500
5/163/16 x 5/16.188 +/- .005.313 +/- .005.0621174.875
3/81/4 x 3/8.250 +/- .005.375 +/- .005.062.9611.000
7/165/16 x 7/16.313 +/- .005.438 +/- .005.0628092.250
1/23/8 x 1/2.375 +/- .006.500 +/- .006.0627002.250
9/167/16 x 9/16.438 +/- .006.563 +/- .006.0626142.750
5/81/2 x 5/8.500 +/- .006.625 +/- .006.0625483.000
11/169/16 x 11/16.563 +/- .006.688 +/- .006.0624945.000
3/45/8 x 3/4.625 +/- .006.750 +/- .006.0624506.000
13/1611/16 x 13/16.688 +/- .006.813 +/- .006.062413
7/83/4 x 7/8.750 +/- .006.875 +/- .006.0623827.250
15/1613/16 x 15/16.813 +/- .006.938 +/- .006.062355
17/8 x 1.875 +/- .0101.000 +/- .010.0623318.000