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Viking's Universal Seal series and Jacketed Universal Seal pumps are used for natural and synthetic rubber applications, including NBR, SBR, SAN, thermoplastic elastomers, cross-linked elastomers, and other rubber-like polymers such as polybutadiene, polyurethanes and silicone.

Viking pumps are commonly used for reactor metering and discharge due to the extremely high viscosities involved.  “Stuffer” pumps feature extremely large suction ports for mounting directly beneath reactors.