891 Rotary Inside Single Seal
Chesterton’s 891 Component Mechanical Seal is a balanced high performance, component single seal. The 891 can be run against many different stationary seal rings for maximum flexibility in many applications. It is a non-fretting design that will not damage the shaft sleeve or any metal parts within the seal.
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Installation & Operation Manuals & Technical Literature
-20°F to 400°F, Fluorocarbon, -65°F to 300°F, Ethylene Propylene, 0°F to 500°F, Kalrez
1in to 4-1/2in
Standard O-Ring Materials:
Ethylene Propylene, Fluorocarbon
Standard Metal Parts Material:
Optional Metal Parts Materials:
Alloy, Alloy 20, Hastelloy B, Hastelloy C, Monel, Nickel, Titanium
Standard Spring Material:
See product datasheet for additional details