In hydraulic cylinder systems, performance depends not only on internal components but also on protection from external contaminants. Wiper seals are located at the outermost point of a cylinder, where they serve as the first line of defense against dirt, dust, moisture, and debris.
As the rod cycles in and out of the cylinder, the wiper seal removes contaminants from the rod surface before they can enter the system. Without an effective wiper seal, these contaminants can lead to premature wear, reduced efficiency, and costly damage to internal components.
For this reason, selecting the right wiper seal is essential to maintaining system performance, reliability, and longevity.
H Rod Wiper
The H Rod Wiper is a double-lip wiper commonly used across a wide range of hydraulic cylinder applications. It is designed to provide both external contamination exclusion and internal fluid retention in a single compact design.
The extended outer wiping lip removes dust, water, and debris from the rod surface, while the integrated beveled sealing lip helps retain internal fluid. This combination makes the H Wiper suitable for applications requiring both wiping and sealing performance.
The H Rod Wiper installs easily into a closed groove configuration and can function as a single-element seal and wiper in low-pressure applications. For higher-pressure systems, it is typically used with a primary rod seal.
Key features:
- Superior abrasion resistance and durability
- Effective external contamination protection
- Effective internal fluid sealing
- Wide operating temperature range
- Single-element compact design
- Easy installation
Recommended for:
- Low-pressure hydraulic cylinder applications as a combined seal/wiper
- Systems requiring both contamination exclusion and fluid retention
- Applications using closed groove configurations
- Higher-pressure systems, when paired with a primary rod seal
AN1 Rod wiper
The AN1 Rod Wiper builds on the AN profile with enhanced contamination control while maintaining a compact design.
This profile includes exclusion technology ribs on the outer diameter, which help prevent contaminants and moisture from forming around the outside of the wiper. Like the AN profile, it also features a slotted heel to reduce pressure trapping and maintain stability within the groove.
Manufactured from high-performance polyurethane, the AN1 Rod Wiper offers a balance of durability, efficiency, and cost-effectiveness.
Key features:
- Enhanced exclusion performance
- Operating temperature range of -40°F to +225°F
- Low friction and low compression set
- Compact design with easy installation
Recommended for:
- Light to medium-duty applications requiring improved contamination protection
- Systems with standard AN groove configurations
D ROD WIPER
The D Rod Wiper is an economical, snap-in polyurethane design intended for more demanding environments. It is compatible with industry-standard “Universal” and D-style glands, making it a versatile choice across a wide range of equipment.
This profile includes inner support ribs for added stability and to help prevent pressure trapping. Exclusion ribs on the outer diameter reduce the risk of contaminants and moisture entering the system.
Its knife-trimmed wiping lip allows the D Rod Wiper to effectively remove heavy debris such as mud, sand, and ice from the rod surface, making it well-suited for harsh operating conditions.
Key features:
- High abrasion resistance and strong wiping performance
- Hydrolysis-resistant polyurethane construction
- Knife-trimmed lips for aggressive debris removal
- Zero leak performance
- Operating temperature range of -40°F to +250°F
Recommended for:
- Industrial hydraulic cylinders
- Mobile and off-highway equipment
- Applications exposed to heavy contamination
MC Rod Wiper
The MC Rod Wiper is designed for medium to heavy-duty applications requiring added durability and wear resistance. This profile features a metal-cased polyurethane construction, allowing it to be press-fit into industry-standard open glands while also helping to reduce corrosion.
Its robust structure, combined with a knife-trimmed wiping lip, ensures effective contamination removal and long-term performance in demanding environments.
With high wear resistance and reliable sealing capability, the MC Rod Wiper is well-suited for applications where strength and durability are critical.
Key features:
- Metal-cased design for structural support
- High wear resistance and strong wiping performance
- Low friction and zero leak performance
- Operating temperature range of -40°F to +250°F
Recommended for:
- Medium to heavy-duty hydraulic applications
- Systems requiring enhanced durability and corrosion resistance
Selecting the Right Wiper Seal
Choosing the appropriate wiper seal depends on application requirements, including environmental conditions, system design, and performance needs.
- H Wiper: Suitable for low-pressure applications requiring both sealing and wiping in a single element
- AN1 Wiper: Improved contamination exclusion for compact systems
- D Wiper: Best for harsh environments with heavy debris exposure
- MC Wiper: Designed for heavy-duty applications requiring maximum durability
Selecting the correct wiper seal is critical to maintaining system performance and protecting your equipment from contamination. PSP Seals offers a range of rod wiper profiles designed to meet the demands of light, medium, and heavy-duty applications.
To explore the full range of available wiper profiles, visit our website to compare options and find the best fit for your system.
If you need assistance identifying the right solution for your application, PSP’s team is available to help. Contact us to discuss your requirements and get support in selecting the appropriate wiper seal for your needs.
