High-Pressure Oil Seal for Rexroth A4VG90 Hydraulic Pump

Size: 50 × 80 × 7/5 mm | Type: BABSL10FX2 | Material: VITON | Part Number: R902601820

Product Overview

This high-pressure oil seal is designed for use with the Rexroth A4VG90 hydraulic pump. It has a size of 50 × 80 × 7/5 mm, a BABSL10FX2 sealing profile, and is manufactured from durable VITON fluoroelastomer material. The corresponding Rexroth part number is R902601820.

The seal is mainly installed at the hydraulic pump shaft sealing position. It helps prevent hydraulic oil leakage while reducing the risk of dust, moisture, and external contaminants entering the pump.

It is a practical replacement component for hydraulic pump repair workshops, remanufacturing companies, construction machinery service providers, hydraulic parts distributors, and maintenance professionals working with Rexroth A4VG90 pumps.

Product Specifications

• Product Name: High-Pressure Oil Seal

• Compatible Pump Model: Rexroth A4VG90

• Part Number: R902601820

• Seal Size: 50 × 80 × 7/5 mm

• Seal Type: BABSL10FX2

• Material: VITON Fluoroelastomer

• Installation Position: Hydraulic pump shaft and rotary sealing area

• Main Function: Prevent hydraulic oil leakage and external contamination

• Application: Hydraulic pump repair, rebuilding, maintenance, and replacement

Key Product Features

Designed for Rexroth A4VG90 Pump Repair

The product size, sealing profile, pump model, and part number are clearly identified, making it easier for technicians to verify compatibility before installation.

This helps reduce incorrect part selection and improves efficiency during hydraulic pump repair and rebuilding.

Durable VITON Material

The oil seal is made from VITON fluoroelastomer, a material commonly selected for demanding hydraulic applications.

VITON provides strong resistance to hydraulic oil, heat, aging, and many industrial fluids, making it suitable for hydraulic pumps operating under challenging conditions.

High-Pressure Rotary Sealing Design

The BABSL10FX2 profile is designed for rotary shaft sealing applications where reliable sealing performance is required.

It helps reduce shaft-end oil leakage and supports stable pump operation after repair.

Helps Reduce Hydraulic Oil Leakage

A worn or damaged shaft seal may cause oil leakage, increased hydraulic fluid consumption, equipment contamination, and repeated maintenance.

Replacing the old seal with a correctly matched oil seal can help restore sealing performance and improve the operating condition of the hydraulic pump.

Suitable for Repair and Spare Parts Inventory

This oil seal is suitable for hydraulic repair workshops, machinery maintenance companies, hydraulic parts distributors, and equipment owners that need reliable replacement seals for Rexroth A4VG90 pumps.

It can also be stocked as a regular maintenance and repair spare part.

Typical Applications

This high-pressure oil seal can be used in the following applications:

• Rexroth A4VG90 variable piston pump repair

• Hydraulic pump shaft leakage repair

• Construction machinery hydraulic system maintenance

• Excavator hydraulic pump repair

• Road roller and paving machine maintenance

• Concrete machinery hydraulic pump service

• Mining machinery hydraulic system repair

• Agricultural machinery maintenance

• Industrial hydraulic equipment repair

• Hydraulic pump rebuilding and remanufacturing

• Hydraulic shaft seal replacement

• Preventive maintenance and spare parts replacement

Target Customers

This product is suitable for:

• Rexroth hydraulic pump repair technicians

• Hydraulic pump repair workshops

• Hydraulic pump remanufacturing companies

• Construction machinery repair companies

• Hydraulic parts distributors

• Engineering machinery spare parts suppliers

• Industrial equipment maintenance providers

• Hydraulic system service companies

• International hydraulic spare parts buyers

• Equipment maintenance departments

When Should the Oil Seal Be Inspected or Replaced?

The shaft seal should be inspected when the Rexroth A4VG90 pump shows any of the following conditions:

• Continuous oil leakage around the pump shaft

• Visible hydraulic oil around the pump housing

• Unusual hydraulic oil consumption

• Hardened, cracked, worn, or deformed seal lips

• Oil leakage after long-term high-temperature operation

• Hydraulic pump disassembly or rebuilding

• Pump shaft or bearing replacement

• Preventive maintenance of the hydraulic system

Replacing the oil seal may help solve leakage problems, but other pump components should also be inspected.

If the shaft surface has wear grooves, scratches, excessive runout, or misalignment, replacing the oil seal alone may not completely eliminate the leakage.

Installation Recommendations

Before installation, confirm that the oil seal size, profile, material, pump model, and part number match the original component.

The shaft, seal housing, and surrounding installation area should be cleaned carefully. Avoid damaging, folding, twisting, or scratching the sealing lip during installation.

Do not install the oil seal by applying excessive force or striking it directly with metal tools.

For better repair results, technicians should also inspect:

• Pump shaft surface condition

• Shaft wear grooves

• Bearings

• Seal housing

• Shaft alignment

• Internal case pressure

• Pump drainage condition

• Related O-rings and sealing components

Information to Confirm Before Ordering

To ensure correct product selection, please provide the following information before ordering:

• Complete hydraulic pump model

• Original oil seal size

• Original seal photos

• Equipment brand and application

• Rexroth part number

• Required order quantity

Product identification:

Rexroth A4VG90 | 50 × 80 × 7/5 mm | BABSL10FX2 | VITON | R902601820

We welcome inquiries from hydraulic pump repair workshops, construction machinery service providers, hydraulic parts distributors, remanufacturing companies, and industrial maintenance businesses.

Contact us for product quotations, stock availability, technical confirmation, sample orders, and bulk purchasing solutions.

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