You are better off repairing the line with steel instead of rubber as gtx6970 said. However there are rubber hoses on transmission cooler lines from the factory. If you cut out the bad part. Flare the ends a little (I use a double flaring tool but just lightly flare the line with the bubble) and use hose designed for transmission fluids it would be fine.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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