Photo courtesy Ohio Rubber Company, Wllloughby, Ohio, a division of The Eagle-Plcher Company
How's this for a surefire success? This thimble-size shield works inside a n automobile engine. It clings to a pulsing valve stem, prevents excessive loss of engine oil—yet allows enough oil to properly lubricate t h e stem. Obviously, a tough job for a tiny part. To d o this critical job, rubber seemed the likely choice. But it would have to be a very special kind of rubber. It would have to withstand constant contact with oil, intense vibration a n d compression, wide temperature extremes and great tension. Material selected:
CHEMIGUM η H rile F
rubber
CHEMIGUM,
the nitrile rubber that
m a i n t a i n s its dimensional stability under blisteringhot oil attack a n d t h e most demanding conditions. Hundreds of thousands of these valve stem shields are now i n use — meeting every operational requirement. And t h e constant uniformity plus t h e easy processability of C H E M I G U M make their production practical and profitable. What can CHEMIGUM d o for your product? For full details — including latest Tech Book Bulletins — a n d technical assistance on C H E M I G U M a n d a complete line of rubber chemicals a n d synthetic rubbers, write : Goodyear, Chemical Division, Dept. F-9420 Akron 16, Ohio.
GOODYEAR CHEMICAL DIVISIOISI Chemigum—Τ. M. The Goodyear Tire & Rubber Company, Akron, Ohio
Circle No. 34 on Readers' Service Card VOL.
5 1 , NO. 6
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JUNE 1959
Circle Nos. 11-1. 1 1 2 , 11-3, 11-4, 11-5 on Readers' Service Card
7 A ^-
