Polypac Steel Case Wiper

Polypac Steel Case Wiper delivers reliable protection for hydraulic rods and cylinders. Durable materials, precision fit, and easy installation reduce contamination, wear, and maintenance for heavy-duty equipment.
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Product Information

Polypac Steel Case Wiper — Protect Your Hydraulic System

The Polypac Steel Case Wiper is a heavy-duty rod wiper designed to keep hydraulic cylinder rods clean and protected from dirt, water, and debris. Built for demanding working conditions, it extends seal life and reduces downtime for construction, agricultural, and industrial machinery.

Key Features

  • Durable steel case housing for strong mechanical protection.
  • High-performance sealing lip made from High Quality elastomers compatible with oils and greases.
  • Precision fit for quick installation and reliable retention on the rod.
  • Available in standard sizes and customized dimensions to suit your application.

Benefits

  • Effective contamination exclusion reduces wear on seals and rods.
  • Improves overall hydraulic reliability and lowers maintenance costs.
  • Robust construction tolerates shock, vibration, and harsh environments.
  • Cost-effective replacement that integrates with common hydraulic systems.

Applications

Ideal for excavators, loaders, agricultural equipment, industrial presses, and any system where rod cleanliness is critical. Works well in dusty, wet, or otherwise hostile environments.

Why Choose Polypac

Polypac combines over a decade of sealing experience with advanced production and testing facilities. Our factory spans more than 10,000 m² and uses industry-leading equipment. We began with filled PTFE seals and now offer a wide range of materials including NBR, FKM, silicone, EPDM and FFKM, plus custom solutions for special conditions. Long-term partnerships with universities and research institutes ensure continuous product improvement.

Ordering & Customization

Polypac provides ready-to-fit standard sizes and tailored designs to meet unique requirements. Contact us with rod diameter, housing dimensions, and operating conditions for a fast quote. Backed by thorough testing, our Steel Case Wiper delivers consistent performance so your equipment runs longer and cleaner.

Product Images

  • UKL Piston Seals

FAQ

What is the difference between a static seal and a dynamic seal?
A Static Seal is used between two surfaces that do not move relative to each other (e.g., pipe flanges, end caps). O-rings and gaskets are common static seals. A Dynamic Seal is used between surfaces that do move (e.g., piston and cylinder, rotating shaft). Rod seals, piston seals, and rotary shaft seals are designed for this purpose.
What is the difference between NBR and FKM materials?
NBR (Nitrile/Buna-N): A general-purpose, cost-effective material with excellent resistance to petroleum-based oils and fuels. It has a standard temperature range of -30°C to +100°C (-22°F to +212°F). FKM (Fluoroelastomer/Viton®): A premium material with excellent resistance to high temperatures (up to 200°C+), chemicals, and oils. It is used in more severe environments but is more expensive than NBR.
How important is surface finish on the metal parts that contact the seal?
Extremely important. A rough surface will abrade and wear out the seal quickly, causing leaks. A finish that is too smooth can prevent a lubricating film from forming. A typical recommended surface finish for dynamic applications is 0.2 to 0.8 μm (8-32 μin) Ra.
How can I prevent seal damage during installation?
Use Tools: Always use dedicated installation tools (e.g., picks, cones, guides). Lubricate: Always lubricate the seal and the contact surface. Protect Sharp Edges: Cover sharp threads and edges with tape or use an installation sleeve. Check the Groove: Ensure the installation groove is clean, deburred, and undamaged.
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Polypac Industrial Technology Co.,Ltd
No. 5, Hegui Mid Road, Hegui Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province, P.R. China.
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Tags
UL Wiper Seal
UL Wiper Seal
hydraulic piston seals​
hydraulic piston seals​
Food grade NBR O-ring kit
Food grade NBR O-ring kit
PTFE Rod Seal
PTFE Rod Seal
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Your privacy matters to us. We handle your data securely, in compliance with international quality and safety certifications.

With over 10 years of sealing expertise, we are ready to provide you with reliable solutions.

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