Interpretation ID: aiam1571

Mr. John H. Mueller,The Weatherhead Company,300 East 131st Street,Cleveland, Ohio 44108; Mr. John H. Mueller
The Weatherhead Company
300 East 131st Street
Cleveland
Ohio 44108;

Dear Mr. Mueller:#This responds to your July 10, 1974, request t modify the hose labeling provisions of Standard No. 106-74, *Brake hoses*, to permit DOT labeling of 1/8-inch O.D. nylon tubing.#To the best of our knowledge 1/8-inch O.D. tubing is not used as brake hose as it is defined by the standard:#>>>'Brake hose' means a flexible conduit manufactured for use in a brake system to transmit or contain the fluid pressure or vacuum used to apply force to a vehicle's brakes'<<<#The tubing is used for pressure gauge lines and in two-speed differentials, but is apparently not used to transmit or contain the pressure used to apply force to a vehicle's brakes. As it is not considered to be brake hose under the standard, it should not be labeled with the DOT symbol.#Aside from this prohibition on the use of the DOT symbol, you are free to label 1/8-inch O.D. nylon tubing as you choose.#Yours truly,Richard B. Dyson,Acting Chief Counsel;