Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
High Temperature NBR FKM Automotive Hydraulic Power Steering System Seal
- Category：Automotive Seals / Power Steering System Seals
- Temperature：-20℃ ~ +120℃ (NBR)；-20℃ ~ +200℃ (FKM)
- Pressure：Max 100bar, peak up to 150bar
- Material：NBR, FKM
- Color：Black+Yellow
- Product description：Power steering seals are precision dynamic seals for hydraulic power steering systems. They retain power steering fluid, maintain hydraulic pressure and block contaminants. Available in shaft lip seals, rack seals, pinion seals, O-rings and complete repair kits. Widely used for passenger cars, trucks, construction and agricultural machinery. Custom sizes are available.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
1. Product Overview
Power steering seals are core precision dynamic sealing parts for automotive hydraulic power steering (HPS) systems. They are professionally designed to lock power steering fluid, stabilize internal hydraulic pressure, and block dust, sediment, and moisture from entering the steering gear. These seals effectively solve problems such as oil leakage and heavy steering, ensuring flexible, stable, and safe operation of the vehicle steering system. Widely applicable to passenger cars, trucks, engineering machinery, and agricultural machinery hydraulic steering gears.
2. Main Product Types
We supply a full range of power steering sealing components and complete repair kits to meet diverse replacement and maintenance needs:
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Power Steering Pump Shaft Seal: Rotary lip seal with metal outer frame (TC/TC4P structure), dual-lip design, used for power steering pump rotating shafts, the most mainstream single seal type.
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Steering Rack Seal: Reciprocating motion seal for steering rack linear movement, including main sealing ring, dust seal, and PTFE wear strip.
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Pinion Shaft Seal: Special sealing part for steering gear input pinion shaft.
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Static Sealing Parts: O-rings and gaskets for pipe joints and valve blocks.
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Power Steering Seal Repair Kit: Complete set including oil seals, O-rings, PTFE back-up rings, wear strips and dust seals, ideal for one-stop maintenance and replacement.
3. Material Options & Features
Multiple high-performance materials are available to adapt to different working temperatures, oil media and working conditions:
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HNBR (Preferred): Industry standard material. Excellent resistance to power steering fluid, high temperature aging and pressure impact. Working temperature: -30°C to +150°C, long service life, suitable for original and high-end replacement parts.
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NBR: Cost-effective with good mineral oil resistance. Suitable for conventional economical replacement scenarios. Working temperature: -20°C to +120°C.
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FKM/Viton: Ultra-high temperature and chemical corrosion resistance. Working temperature: -20°C to +200°C, customized for special engineering vehicles and harsh working conditions.
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Bronze Filled PTFE: Low friction, super wear-resistant, used as supporting wear strips and piston sealing accessories for steering racks, matching perfectly with power steering seal kits.
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PU: High wear resistance and extrusion resistance, specially used for reciprocating rack sealing scenarios.
4. Product Specifications & Working Parameters
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Applicable Medium: Power Steering Fluid (PSF), ATF automatic transmission fluid
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Working Pressure: Conventional 0-100bar, peak pressure up to 150bar
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Hardness: 70-80 Shore A
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Structural Advantage: Dual-lip sealing design with pre-tightened spring and backflow thread; integrated metal frame for tight press-fitting, zero leakage and good dustproof performance
5. Core Advantages
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Precision manufacturing, smooth sealing lip without burrs, effectively preventing fluid leakage
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Excellent wear resistance and aging resistance, adapting to long-term high-frequency steering operation
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Complete specifications and customizable sizes, including custom bronze filled PTFE wear strips
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Strict quality control, consistent with industry standard automotive sealing accessories
6. Common Failure Causes & Solutions
Our high-quality seals effectively avoid common industry failure problems caused by inferior materials:
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Resist oil deterioration and particle wear, prevent seal lip damage
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Anti-extrusion and anti-deformation, adapt to instantaneous pressure impact of hydraulic system
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Material oil compatibility tested, no swelling or hardening after long-term use
7. Applicable Industry
Automotive hydraulic power steering systems, passenger cars, commercial trucks, construction machinery, agricultural machinery and other hydraulic steering equipment maintenance and replacement.
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