Specify the premium-grade polyisoprene rubber
Natsyn Use the attached reply card to request product data, evaluation samples, technical assistance.
Get set New Natsyn polyisoprene rubber cuts compression and permanent set...by big percentages NATSYN® polyisoprene rubber cures tighter than most rubbers. Rea son: better molecular crqss linking. Result: marked improvements in compression set and permanent set. Compare the differences in this table: TYPICAL 30 PART HAF BLACK FORMULATION
Compression Set
Method B, % 22hrs. @158°C
Low Sulfur Cure
Typical Sulfur Cure
NATSYN 400
NATSYN 400
Natural Rubber, #1RSS
Natural Rubber, #1RSS
9.3
14.0
10.4
16.5
Permanent Set, % 2 min. hold/2 min. rest 10.5
11.0
8.5
12.5
exceeds the toughest specs. For example, ASTM speci fication 361 allows up to 20% compression set for rubber con crete gaskets. Some manufactur ers now hold to 15% maximum for 40 Durometer and 18% for 60 Durometer. NATSYN makes the difference. For closer tolerances. Tighter, more uniform seals. NATSYN
gives you tougher prod ucts. Seals, gaskets, motor mounts. Components designed to take severe impact. Highly re silient molded and extruded goods.
NATSYN coloris consistent. Equal to IX pale crepe. Color stays con sistent from batch to batch. NATSYN lowers shipping and han dling costs. Comes in easy-tohandle 75-lb. bales. Loose or uni tized on pallets. In 5-ply siliconelined paper bags or polyethylenewrapped in 5-ply paper bags. No cleaning or g u i l l o t i n i n g . No freight or pier charges. No stock piling, either—24-hour delivery to prime markets assures your supply.
NATSYN
NATSYN assures reliable, uniform cure rate. No constant testingno adjustments to make.
There are 20 field offices nation wide—with technical representa tives ready to bring you fast, ef fective service. For NATSYN samples, additional product data, technical service... tear out and mail the attached card.
GOODYEAR
G Μ Ε Ν/1 I C A L S C&ΕΝ
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