Cunifer™ Brake Line Catalog
PDF Catalog
All of our tubing has .028" wall thickness.

All of our tubing conforms to hydraulic brake tubing specifications
SAE J1650, DIN 74234 and BS 2871.

For more help please view our Technical Questions page.

Articles & Links:

Article-Copper-nickel automotive vehicle brake tubing
A review of the history and peformance of copper-nickel brake tubing

Article-Automotive hydraulic brake tube: The case for 90/10 copper-nickel tubing
Recent tests prove that 90/10 copper-nickel tube (UNS C70600) is superior to steel tubes when run through over 120 cycles (includes test results, pictures).

The part number indicates the tube sized used.
-3 is 3/16", -4 is 1/4", -5 is 5/16",-6 is 3/8", -8 is 1/2"
CNF stands for Copper Nickel Ferrous (iron) alloy C70600.

If you need to make a tight bend with the CNF-5 or the CNF-6 tubing sizes you will need a tube bender.

You will need a tube bender to work with the CNF-8, CNF10mm and CNF12mm tubing sizes.

Shops, Wholsalers, Schools and Military personnel call for pricing.

Click on Part Number for Picture

Part Number	Description
CNF-3	3/16”/4.75mm OD tubing x 25 foot coil
CNF-3A	3/16”/4.75mm OD tubing x 12 foot coil
CNF-4	1/4” OD tubing x 25 foot coil
CNF-4A	1/4” OD tubing x 12 foot coil
CNF-5	5/16”/7.94mm OD tubing x 25 foot coil
CNF-5A	5/16”/7.94mm OD tubing x 12 foot coil
CNF-6	3/8” OD tubing x 25 foot coil
CNF-6A	3/8” OD tubing x 12 foot coil
CNF-8	1/2” OD tubing x 25 foot coil
CNF-8A	1/2” OD tubing x 12 foot coil
CNF6mm	6mm OD tubing x 25 foot coil
CNF6mmA	6mm OD tubing x 12 foot coil
CNF10mm	10mm OD tubing x 25 foot coil
CNF10mmA	10mm OD tubing x 12 foot coil
CNF12mm	12mm OD tubing x 25 foot coil

Save Money with Package Deals

Part Number	Description
T1	2 coils of 3/16"/4.75mm OD tubing x 25 foot (save $21.00)
T2	2 coils of 1/4" OD tubing x 25 foot (save $33.00)
T3	1 coil of 3/16" OD tube x 25 foot and 1/2 coil of 1/4" OD tubing x 12 foot (save $20.00)
T4	1 coil of 3/16" OD tubing x 25 foot, 1/2 coil of 1/4" OD tubing x 12 foot, a #2 and a #4 nut pack (save $25.00)

Stock Sizes	Theoretical Bursting Pressure	Recommended Max. Working Pressure at 5 - to - 1 safety factor with appropriate fittings
O.D. x Wall Thickness	lb/in (psi)	lb/in (psi)
SAE RANGE
3/16"     x 0.028"	17,000 psi	3,200 psi
1/4"       x 0.028"	12,450 psi	2,300 psi
5/16"     x 0.028"	9,450 psi	1,800 psi
3/8"       x 0.028"	7,960 psi	1,450 psi
1/2"       x 0.028"	5,850 psi	1,050 psi
Metric RANGE
4.75mm     x 0.7mm	17,000 psi	3,200 psi
6mm         x 0.7mm	13,000 psi	2,400 psi
8mm         x 0.7mm	9,450 psi	1,750 psi
10mm       x 0.7mm	7,400 psi	1,400 psi