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SPECIALLY REPINED FOR RURBER-PROCESSING
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PRODUCT UNIFORMITY
Circo is not an ordinary mineral oil. Circo is a petroleum· base processing aid, refined within rigid specifications solely to meet the exacting requirements of rubber compounders.
Why compounders prefer
mm light rubberprocessing aid
ASSURED
Uniformity is vital to profitable mass production. Circo is refined under precision-controlled conditions, permit· ting no deviation from specifications. With Circo the danger of variation is minimized.
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HIGH
HAPHTHEHICITY
Leading rubber technologists are unanimous in agreeing that hydrocarbons with a high degree of naphthenkify are best suited for processing and plasticizing rubber· Sun's exclusive refining process makes possible high naphthenicity in Circo.
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EASY TO
HANDLE
Circo is clean and free-flowing, even in cold weather.
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FAIR
PRICE
To be certain of always getting uniform, top-quality results, leading compounders pay slightly more for Circo. They recognize the need for a precision-produced prod uct, and will not risk failures through the use of low-price petroleum-base oils.
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II J O B
P R O V E Dt t
Circo has been used by rubber processors for over 12 years. Hundreds of rubber manufacturer* are sold on the performance and durability of goods processed with Circo. They know that such products turn in remarkable service records. Every user of Circo is entitled to the technical assistance of Sun's specially trained and widely experienced rubber tech nologists. Such service is rarely available to the user of ordinary petroleum-base oils. For further information, just write or call the Sun Office nearest you.
SUN OIL COMPANY · Philadelphia 3, Pa. In Canada: Sun Oil Company, Ltd., Toronto and Montreal
S U N PETROLEUM "JOB P R O V E D " IN EVERY
PRODUCTS INDUSTRY
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