Selection of Commonly Used Materials for Mechanical Seals

Clean water, normal temperature: (dynamic) 9Cr18, 1Cr13 surfacing cobalt chromium tungsten, cast iron; (static) impregnated resin graphite, bronze, phenolic plastic.

River water (containing sediment), normal temperature: (dynamic) tungsten carbide, (static) tungsten carbide.

Sea water, normal temperature: (dynamic) tungsten carbide, 1Cr13 surfacing cobalt chromium tungsten, cast iron; (static) impregnated resin graphite, tungsten carbide, cermet.

Superheated water 100 degrees: (dynamic) tungsten carbide, 1Cr13 surfacing cobalt chromium tungsten, cast iron; (static) impregnated resin graphite, tungsten carbide, cermet.

Gasoline, lubricating oil, liquid hydrocarbon, normal temperature: (dynamic) tungsten carbide, 1Cr13 surfacing cobalt chromium tungsten, cast iron; (static) impregnated resin or tin-antimony alloy graphite, phenolic plastic.

Gasoline, lubricating oil, liquid hydrocarbon, 100 degrees: (dynamic) tungsten carbide, 1Cr13 surfacing cobalt chromium tungsten; (static) impregnated bronze or resin graphite.

Gasoline, lubricating oil, liquid hydrocarbons, containing particles: (dynamic) tungsten carbide; (static) tungsten carbide.