Processing Machinery
3 views
TPU Oil and Fuel Resistance
Problem Phenomenon
TPU seals have a swelling rate far lower than NBR in mineral oil, becoming the first choice
Cause Analysis
Polyester-type TPU has extremely strong resistance to mineral oil, lubricating oil, hydraulic oil, fuel and most non-polar hydrocarbon solvents, with a swelling rate far lower than rubbers such as NBR
Solution
①Prefer polyester-type TPU for oil-medium sealing; ②Conduct immersion verification according to the specific oil product; ③Fully exploit the oil resistance advantage in fuel systems; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
TPU's oil resistance is the core competitiveness of its sealing applications; polyester type performs excellently in oil media; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
Was this helpful?
0 people found this helpful
Thank you for your feedback!