Lip force is optimized for a range of sizes by varying designs of the internal spring
Works in a wide range of temperatures
Excellent fluid compatibility
Exceptional abrasion resistance
Available in diameters up to 2100 mm
The 439 series rotary seal is used in industrial rotary applications that require minimum wear and long service life.
Steel and Aluminum Processing
Pulp and Paper
Pumps and Gear Boxes
The 439 series rotary seal features high-grade NBR reinforced with elastomer and fabric heel. To suit a variety of applications, the series is also available in higher temperature HNBR and FPM compounds.
NBR fabric / garter spring
HNBR fabric / garter spring
FKM or FPM / fabricÂ / garter spring
water oil emulsions (HFA)
water-glycol fluids (HFC)
polyol esters (HFD)
15 m/s (50 ft/sec)
7.25 bar(105 psi)
Note: for other materials or fluids please contact our engineering department.