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Formal Questions about Rotary Shaft Seal.

Update:2017-04-06

What is rotary shaft seal? Rotary shaft seal also named rotary rod lip seal, known as oil seal. DSH Seals tell you that rotary shaft seal is installed between rotary shaft and stationary part, which keeps the leakage of lubrication and prevents the entering of dust and contamination.

Q1: What are the features of rotary shaft seal?

A1: A)excellent dimensional stability

B)perfect resistance of high pressure, wearing and high temperature

C)Resistance of most media and chemicals

D)Small installation space, simple groove with self lubrication

E)Adopted both in shaft and piston

F)Low friction, not creeping when start-up, keep constant motion under low speed.

Q2: What’s the principle and material?

A2: Rotary shaft seal is one of the mechanical seals, commonly consists of gasket and Spiral rotating frame  and the gasket is made from synthetic material.

Q3: Which seal should be adopted in gases of rotary shaft seals? Which seal can be used when the speed is about 500 turns/m under compressed gas and dry running gas seals? And which material is it made from?

A3: When using for dry running gas seals, the materials depend on gases (air,  liquefying gas,ammonia and oxygen）.

A3: When using for non contact dry running gas seals, the materials is soft-hard, the soft ring is made from flexible graphite and the hard ring is made from hard metal.