"Is this acceptable for diesel or is there something else? Ed K " go to the McMaster website, enter in the search block: 5233KAC, a 5 page "brochure" on chemical compatability of PVC tubing. page 2, 5046K Tygon Ultra Chemical (tubing) is rated "A", for Diesel Fuel: "No Effect - Excellent chemical resistance. No performance degradation." Chet