I have question about the expected lifespan of the TFN PTFE Coupler UM2/+ produced by 3D Solex. Some of the online stores which sell this product are stating the lifespan is quite long, but my experience has been quite the opposite so far. I'm seeing serious under extrusion issues after about 250 to 300 hours of PLA printing at 210 degrees. Replacing the coupler resolves the issue.
Is this about the expected lifespan of the product or are there certain things I should be doing to increase its lifespan?
I have an Ultimaker 2Go and I print with several types of PLA including Ultimaker, MeltInk, Matter Hackers Pro, and a little bit of the Poly Max Plus.