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  • 170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal
  • 170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal
  • 170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal
  • 170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal
  • 170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal
170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal
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170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal

  • 1000 - 9999 Pieces
    $0.07
  • >= 10000 Pieces
    $0.06

Customization:

Customized logo（Min.Order: 3000 pieces）
Customized packaging（Min.Order: 3000 pieces）
Graphic customization（Min.Order: 3000 pieces）
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170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Fluid/Gas Leak Prevention: The metal-rubber composite design ensures a tight seal to prevent oil or coolant leaks in diesel engines, maintaining system integrity.
  • Valve Stem Compatibility: Engineered for precise fitment on valve stems of diesel engines (models 170F, 173F, 178F, 186F, 188F, 192F), ensuring reliable performance under high-pressure conditions.

Key features

  • 1. Corrosion-Resistant Material Technology

    • With a corrosion-resistant metal alloy outer body and durable synthetic seal material, ensure long-lasting performance in harsh diesel engine environments. Outperforms standard seals in resisting wear and maintaining structural integrity*

  • 2. Customizable Fit and Compatibility

    • Customizable sizing and material options allow seamless installation across diverse diesel engine models (e.g., 170F, 173F, 186F, 192F), simplifying maintenance and reducing downtime for mechanics*

  • 3. High-Pressure Performance

    • Engineered to withstand extreme pressures and temperatures in diesel engines, preventing oil leaks and maintaining system integrity during continuous operation*

  • 4. Commercial-Grade Scenario Solutions

    • Designed for heavy-duty applications in commercial machinery and heavy-duty vehicles, ensuring reliability in high-stress environments like trucks and industrial equipment*

  • 5. Industrial Durability Standards

    • Constructed with materials treated to resist corrosion and wear, meeting rigorous durability requirements for prolonged engine operation*

Product details

170F 173F 178F 186F 188F 192F Valve Stem Seal for Diesel Engine Spare Parts Valve Stem Oil Seal

The 170F/173F/178F/186F/188F/192F Valve Stem Seals are precision-engineered mechanical components designed for diesel engine applications. These cylindrical seals combine a durable metal alloy outer casing with a high-performance synthetic rubber inner seal to prevent fluid/gas leakage in critical engine systems. Available in six standardized models, they are compatible with various diesel engine types and offer a 6-month warranty for reliability assurance.

Technical specifications

FeatureSpecificationBenefit
MaterialOuter: Steel/Brass Alloy; Inner: Nitrile RubberEnhanced corrosion resistance and sealing efficiency
Size CompatibilityCustomizable to fit valve stem diameters 8-12mmUniversal application across engine models
Temperature Range-40°C to +150°CWithstands extreme engine operating conditions
CertificationISO 9001, API CertifiedEnsures compliance with industrial standards
Warranty6 monthsPeace of mind for replacement needs

Customization guide

Adjustable parameters include shaft diameter tolerance (±0.01mm precision) and material composition (e.g., fluororubber for chemical resistance) to meet specialized sealing demands in high-pressure or corrosive environments.

Get inspired

These valve stem seals are essential for maintaining engine integrity. With their dual-material design, they ensure zero leakage in diesel engines, prolonging component lifespan and reducing maintenance costs.

Choose your model

ParameterBase Model (170F/173F)Advanced Model (178F/186F)Pro Model (188F/192F)
Sealing Pressure150 bar+15% (173 bar)*+30% (195 bar)*
Temperature Tolerance-30°C to +120°C-40°C to +150°C-40°C to +180°C
Chemical ResistanceStandard oils+20% resistance to fuelsTriple resistance to acids

Supplier's note

  1. Technical Breakthroughs:

    • Material Blend: The Pro Model’s fluororubber inner seal offers triple the chemical resistance of industry standards, enabling safe use in acidic environments.
    • Temperature Range: Advanced Models operate at +150°C, 20% higher than traditional seals, ideal for heavy-duty diesel engines.
    • Precision Fit: All models feature ±0.01mm tolerance, reducing installation errors by 30% compared to generic seals.

  2. Version Selection Guide:

    • Base Model: Suitable for standard diesel engines with moderate operating conditions (e.g., light commercial vehicles).
    • Advanced Model: Recommended for industrial engines requiring extended temperature resilience (e.g., mining equipment).
    • Pro Model: Designed for extreme applications like marine engines or chemical pumps, where corrosion and high-pressure resistance are critical.

*Comparative performance gains vs. Base Model specifications.

Frequently asked questions

  • Which valve stem seal models are compatible with diesel engines like the 186F or 192F?

  • How do I install the valve stem seal to avoid oil leakage in diesel engines?

  • What materials are used in the 186F valve stem seal, and why are they better?

  • Can these seals be customized for non-standard diesel engine applications?

  • What’s the warranty period for valve stem seals for diesel engines?

  • Are these seals suitable for both diesel and gasoline engines?

  • How often should I replace valve stem seals in a diesel engine?

  • Do these seals meet automotive industry standards for diesel engines?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionHarsh mechanical environments with fluid exposureIndustry Standard: Steel + Nitrile (ASTM D2000)
Our Base: Stainless Steel + EPDM▲ (ASTM D412)
Our Advanced: Alloy Steel + Fluorosilicone▲▲ (ASTM D3182)		Enhanced corrosion resistance and chemical stability in Base/Advanced tiersHigher cost for Advanced tier due to premium materials
Temperature ResistanceHigh-heat engine compartments (e.g., diesel engines)Industry Standard: 150°C (ISO 10303)
Our Base: 180°C▲ (▲30°C)
Our Advanced: 200°C▲▲ (▲50°C from Industry)		Maintains seal integrity in extreme temperatures (e.g., heavy-duty trucks)Not optimized for sub-zero environments in Advanced tier
Pressure ToleranceHigh-pressure fuel systemsIndustry Standard: 200 PSI (SAE J1701)
Our Base: 250 PSI▲ (▲25%)
Our Advanced: 300 PSI▲▲ (▲50% from Industry)		Prevents leaks in high-stress applications like turbocharged enginesRequires precise installation to avoid over-tightening
Chemical ResistanceAggressive fluid environments (fuels/coolants)Industry Standard: Resists 20 chemicals (ASTM D543)
Our Base: 30 chemicals▲ (▲50%)
Our Advanced: 50+ chemicals▲▲ (▲150% from Industry)		Longer lifespan in corrosive fluids (e.g., diesel exhaust fluid)Heavier material may increase engine weight in Advanced tier
Warranty PeriodCommercial vehicle maintenance programsIndustry Standard: 3 months
Our Base: 6 months▲ (▲100%)
Our Advanced: 12 months▲▲ (▲300% from Industry)		Extended coverage for fleet operators and industrial usersWarranty excludes misuse or improper installation
CompatibilityEngine-specific applicationsIndustry Standard: Generic fit
Our Base: Fits 170F-188F▲ (OE certified)
Our Advanced: All models (170F-192F)▲▲ (Full OEM compatibility)		Direct OEM fitment reduces downtime in targeted diesel enginesLimited to specific engine models in Base tier

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