A high-quality wiper seal for a hydraulic valve block spool. It is a key sealing component mounted on the outside of the valve block section. Its function is to protect the inside of the valve block from external contaminants (dust, water, mud) that could enter along the spool. Made from materials resistant to hydraulic oil and abrasion, it guarantees a long service life and protection for the precision components of the valve block.
In the construction industry, machine reliability is the key to success. That's why we offer high-quality replacement parts for construction machinery that meet the highest standards of durability and performance. Our products are the ideal solution for companies and specialists looking for reliable components at attractive prices.
| Brand (Machine Type) | Model |
|---|---|
| JCB (Backhoe Loaders) | 3CX, 4CX |
The list above is for reference. Before purchasing, we recommend verifying the part number in the parts catalogue for your machine.
Before replacing any hydraulic system components, you must completely depressurize the system by lowering all attachments to the ground and operating all levers with the engine off. Use safety glasses and gloves.
The wiper seal is the valve block's first line of defense. Its damage or wear allows dirt, sand, and water to enter the section, which leads to scoring of the spool and valve body, causing internal leaks and a loss of pressure.
A damaged wiper seal is a direct path to destroying the valve block.
The cost of replacing a wiper seal is negligible compared to the cost of refurbishing or replacing an entire valve block section. Don't take the risk – order a new, durable FEROSTEM wiper seal and provide maximum protection for your valve block.
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The wiper seal is a dust seal. The oil sealing is handled by a pressure seal (O-ring with a backup ring or a U-ring) located deeper inside. You should always replace the complete set of seals for a given section to ensure a full refurbishment.
2. What is the difference between a wiper seal and a regular oil seal?A wiper seal has a specially shaped lip that is designed to "scrape" dirt off a reciprocating component (in this case, the spool). Its main job is to protect against external contaminants, not to hold pressure.
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Valve Block Protection
Protects spools from scoring and contamination.
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Longer Lifespan
Extends the life of the internal seals.
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High Durability
Material resistant to oils and abrasion.
Have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you choose the right part to get your equipment back to work as soon as possible.
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Seal wiper suitable for JCB 3CX 4CX

















