Rev. Date:
23-Oct-2015
Rev.:
B
Document No.
NETM 1000
Sheet:
2 of 2
If this document is printed it becomes uncontrolled. Check for the latest revision.
Properties, continued
Property Unit Requirement Test Method
Fluid Resistance
1 Hour at 50C in
Battery Acid
followed by test for:
Weight Increase
24 Hour at 23C in
Gasoline
Diesel Fuel
Transmission Oil
Power Steering Fluid
followed by test for:
Weight Increase
1 Hour at 50C in
Motor Oil 15W/40
Brake Fluid, DOT 4
followed by test for:
Weight Increase
1 Hour at 23C in
Antifreeze 50/50
followed by test for:
Weight Increase
Percent
Percent
Percent
Percent
15 maximum
15 maximum
15 maximum
15 maximum
Note 2
Note 1: Test three specimens of tubing for low temperature flexibility as follows: Slide the tubing onto a
stranded AWG wire (nearest AWG which will fit inside the tube). Condition the specimens and a
mandrel, selected from Table 2, in a cold chamber for 4 hours at -55 ± 3C (-67 ± 5F). After
completion of the conditioning period and while still in the cold chamber at the specified
temperature, bend the specimen around the mandrel through not less than 360 degrees in 10 ± 2
seconds. Visually examine the tubing for cracks.
Note 2: Six specimens, three 6-inch (150-mm) tubing specimens, which shall be weighed prior to
immersion and shall be immersed in each of the test fluids listed at the temperature specified.
The volume of the fluid shall not be less than 20 times that of the specimens. After conditioning,
all the specimens shall be lightly wiped and air dried for 30 to 60 minutes at 23 ± 3C (73 ± 5°F).
The three specimens shall be reweighed after immersion and the weight change calculated as a
percentage.
Table 3: Mandrel Dimensions for Bend Testing
Size Mandrel Diameter
mm in.
3 to 6 inclusive 7.9 ± 0.05 5/16 ± 0.002
8 to 14 inclusive 9.5± 0.08 3/8 ± 0.003
