Wiper Seal 40x52x5/8 - Hydraulic Cylinder Scraper Ring

Main Product Description

The Wiper Seal 40x52x5/8, also known as a scraper ring for hydraulic cylinders, is a precision sealing element designed to protect hydraulic and pneumatic systems from contamination. Mounted on the cylinder head, the wiper seal removes dust, mud, sand, water, oil residue, metal particles and other contaminants from the piston rod during operation — preventing premature wear of internal sealing components and extending the service life of the entire hydraulic unit.

This wiper seal is suitable for hydraulic cylinders in industrial machinery, agricultural and construction equipment, mobile machines, lifting systems, and hydraulic power units. The standard dimension Ø40 mm (rod diameter) x Ø52 mm (housing diameter) x 5/8” thickness ensures compatibility with many popular cylinder types.

Manufactured from high-performance NBR or PU (polyurethane), the seal offers excellent resistance to oils, hydraulic fluids, greases, water, dust, abrasion, and temperature fluctuations commonly found in harsh working environments.

Technical Data:

• Inner diameter (rod size): 40 mm

• Outer diameter (housing size): 52 mm

• Thickness / height: 5/8"

• Type: Wiper / scraper seal for hydraulic cylinders

• Material: NBR or PU (high-durability elastomer)

Key Benefits

• Effective protection against contamination - prevents dust, sand, water, oil and debris entering the cylinder.

• Extends service life of hydraulic cylinders - protects piston and rod seals from wear.

• High durability & reliability - excellent mechanical strength and resistance to abrasion.

• Easy installation - press-fit mounting in cylinder housing.

• Supports stable performance in industrial, construction, and agricultural applications.

FAQ - Frequently Asked Questions

Q: What is the function of a wiper seal in a hydraulic cylinder?
A: It cleans the piston rod during movement, preventing contaminants from entering the cylinder and damaging internal seals.

Q: What material is most commonly used?
A: NBR and PU are standard materials due to excellent resistance to oils, hydraulic fluids, dust, water, and abrasion.

Q: How do I select the correct wiper seal?
A: Match rod diameter, housing diameter, and thickness precisely to the cylinder specification.

Q: Can this seal be used in both hydraulic and pneumatic systems?
A: Yes — it is suitable for both hydraulic and pneumatic cylinders.

Q: Does the wiper seal handle outdoor or harsh environments?
A: Yes — it is designed for harsh agricultural, industrial, and construction conditions.