Selection of Common Materials for Mechanical Seals

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

River water (with silt), normal temperature: (dynamic) tungsten carbide, (static) tungsten carbide.

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

Superheated water 100 ℃: (dynamic) tungsten carbide, 1Cr13 surfacing cobalt chromium tungsten, cast iron; (Static) resin impregnated 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 ℃: (dynamic) tungsten carbide, 1Cr13 surfacing cobalt chromium tungsten; (Static) impregnated with bronze or resin graphite.

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