Wiper seals, also referred to as scrapers or dust seals, are critically important components within hydraulic and pneumatic systems. Their main purpose is to keep dirt, dust, moisture and contaminants out of the system and away from internal moving parts (specifically piston rods). A good wiper seal is essential to keep dirt out of the seal, because as contaminants get into the groove, they cut through the elastomer, and the system fails prematurely.
Types of Wiper Seals
There are various materials and designs available for wiper seals based on the application. Below are the common types:
U-Cup Wiper Seals
- Made for narrow grooves.
- A good choice for light- to medium-duty applications.
- Material: Polyurethane or NBR
Metal-Clad Wiper Seals
- Add a stiffing ring for added rigidity.
- Ideal for applications which require high strength and durability.
- Material: NBR, Steel or brass insert
Lip Wiper Seals
- A flexible lip that scrapes the piston rod clean.
- It is widely used in fast systems.
- Material: PTFE (Teflon) or Viton
As one of the leading wiper seals manufacturers and suppliers in China, we warmly welcome you to wholesale or buy customized wiper seals made in China from our factory.
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