HWYD double-acting polyurethane wiper seals are designed to effectively remove contaminants, prevent moisture ingress, and relieve back pressure in demanding hydraulic cylinder applications. They are particularly suitable for crane boom cylinders and similar applications.
Item NO.:
HWYDOrder(MOQ):
50Payment:
T/TProduct Origin:
ChinaShipping Port:
Shanghai、NingboProduct Description
HWYD Double Acting PU Wiper Seal is a specially designed polyurethane wiper seal that provides effective contaminant removal while helping prevent moisture from entering the bottom of the housing groove. This design reduces the risk of corrosion in the groove, making it particularly suitable for hydraulic cylinders operating in environments where moisture accumulation is a concern.
Unlike conventional single-acting wipers, the HWYD features a double-acting design and integrated pressure-relief holes. These holes allow potential back pressure to escape, helping prevent the wiper seal from being forced out of its housing groove.
HWYD wiper seal is especially suitable for hydraulic cylinders with the rod end positioned vertically upward, such as crane luffing cylinders, where moisture ingress and groove corrosion can affect sealing reliability.
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Typical Applications:
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Technical Data
| Working Pressure | Surface speed | Operating Temperature |
| / | ≤1m/s | -30°C to +100°C |
FAQ
What is a double acting PU wiper seal?
A double acting PU wiper seal is a polyurethane rod wiper designed to provide wiping action in both directions according to its specific profile. The HWYD also incorporates pressure-relief holes to help release potential back pressure.
How does the HWYD help prevent groove corrosion?
Its specially designed structure helps prevent moisture from reaching the bottom of the housing groove, reducing the conditions that can contribute to corrosion.
Where is the HWYD particularly suitable for use?
It is particularly suitable for hydraulic cylinders with vertically upward-facing rod ends, such as crane luffing cylinders, where moisture ingress and groove corrosion are concerns.
GWJ metal-cased hydraulic wiper seals effectively block dust, dirt, sand and metallic debris from infiltrating the piston rod end pin. A unique feature (see Figure 1) is its specialized dust-exclusion lip design. Refer to the GWJ seal specifications below for full details.
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HWY Double Lip Wiper Seals are polyurethane wiper seals made of high-quality PU and feature a double-lip design. They provide effective protection against dust, dirt, and moisture in hydraulic cylinder applications.
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HWE Single Acting Hydraulic Wiper Seal is made of wear-resistant polyurethane, providing excellent dust protection, weather resistance, low friction, and stable groove retention.
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