Product Introduction

This precision-engineered O-ring is a critical sealing component for heavy-duty truck systems. It creates a reliable, pressure-tight seal between mating surfaces, ensuring hydraulic fluids and lubricants remain contained, even under high pressure and temperature fluctuations.

Structure & Material

• Material: Nitrile Butadiene Rubber (NBR), selected for its excellent oil resistance, durability, and ability to withstand high temperatures.

• Design: A circular, elastomeric ring with a uniform cross-section. It is designed to be compressed between two mating surfaces to create a positive seal.

Performance

• High-Pressure Sealing: The NBR material and precise dimensions ensure a reliable seal even under high system pressures.

• Oil & Chemical Resistance: Resists degradation from hydraulic fluids, gear oils, and other automotive chemicals, maintaining sealing integrity over time.

• Temperature Stability: Performs reliably across a wide temperature range, from extreme cold to high operating temperatures.

Durability

• The NBR compound resists wear, tearing, and compression set, ensuring long service life.

Core Function

1. Fluid Containment: Seals hydraulic or lubrication system connections to prevent leaks.

2. Pressure Retention: Maintains system pressure by ensuring a tight, reliable seal between components.

3. Contamination Protection: Blocks dirt and debris from entering sealed systems, protecting internal components.

O Ring WG7117349101 Sinotruk Sitrak – Premium Sealing Ring for Heavy-Duty Trucks

When your Sinotruk Sitrak truck demands reliable sealing performance, the O Ring WG7117349101 delivers exactly that. This genuine-spec sealing ring is engineered to prevent leaks and block contaminants from entering critical drivetrain components. Whether you’re maintaining a fleet or sourcing replacement parts for your workshop, this O-ring keeps your Sitrak trucks running without costly downtime.

At Mettlead, we supply this O Ring WG7117349101 Sinotruk Sitrak part directly from our factory in China, which means you get competitive pricing without sacrificing quality. As a dedicated supplier of Chinese heavy-duty truck parts, we understand what procurement managers need most: the right part, at the right price, delivered on time.

Key Features and Benefits of O Ring WG7117349101

This isn’t just any rubber ring. The O Ring WG7117349101 is purpose-built for the demanding operating conditions found in Sinotruk Sitrak heavy-duty trucks. Here’s what makes it stand out:

• Precision Sealing Performance – Engineered to create a tight, leak-free seal that prevents hydraulic fluid or lubricant from escaping critical assemblies.
• Contaminant Barrier – Acts as a reliable shield against dust, dirt, moisture, and other harmful particles that can accelerate component wear.
• High-Temperature Resistance – Manufactured from premium elastomer material that maintains its elasticity and sealing integrity even under extreme heat conditions.
• Chemical Compatibility – Resists degradation from oils, fuels, and common automotive fluids, ensuring a longer service life.
• OEM-Spec Dimensions – Matches the exact dimensional tolerances of the original Sinotruk part number WG7117349101, so installation is seamless with no modifications required.
• Extended Durability – Designed to resist compression set over time, which means it won’t flatten out and lose its sealing ability prematurely.

In short, choosing the correct O Ring WG7117349101 for your Sitrak truck protects expensive drivetrain components and helps you avoid unplanned repairs down the road.

Application Scenario: Where Does This O-Ring Fit?

The O Ring WG7117349101 is specifically designed for Sinotruk Sitrak heavy-duty trucks. It serves as a critical sealing element within the rear axle assembly, where it performs two essential functions:

1. Leak Prevention – It seals joints and interfaces to keep gear oil and lubricants contained within the rear axle housing, preventing messy and damaging leaks.
2. Contaminant Exclusion – It blocks road debris, water, and fine particles from entering the axle assembly, protecting gears and bearings from premature wear.

If you notice oil seepage around your Sitrak’s rear axle area, or if you’re performing scheduled maintenance on the drivetrain, replacing this O-ring is a smart preventive measure. A small part like this can save you from a much larger repair bill later.

Looking for more rear axle components? Browse our complete Rear Axle Parts collection for additional seals, bearings, and related hardware.

Technical Specifications

Below you’ll find the key technical parameters for the O Ring WG7117349101 Sinotruk Sitrak. These specifications ensure you’re ordering the exact part that fits your application:

Need the full catalog of Sitrak parts? Visit our Sitrak Heavy-Duty Parts brand page to explore thousands of genuine-spec components.

OEM and ODM Capabilities

At Mettlead, we go beyond simply supplying off-the-shelf parts. We understand that different markets have different requirements, so we offer flexible OEM and ODM services for the O Ring WG7117349101 and other sealing products:

• White-Label Packaging – Want to sell under your own brand? We provide neutral or custom-branded packaging tailored to your market identity.
• Custom Packaging Solutions – From individual blister packs to bulk industrial packaging, we adapt to your distribution needs.
• Strict Quality Control – Every batch undergoes dimensional inspection and material testing before shipment. We maintain consistent quality so you can confidently supply your own customers.
• Flexible MOQ – Whether you need a small trial order or container-load quantities, we work with you to find the right volume.
• Material Customization – Depending on your operating environment, we can source O-rings in NBR, FKM (Viton), EPDM, or silicone compounds to match specific temperature and chemical resistance requirements.

This flexibility makes Mettlead an ideal long-term sourcing partner for distributors, fleet operators, and aftermarket retailers who need reliable supply with consistent quality.

Why Source O Ring WG7117349101 from Mettlead?

Choosing the right supplier matters just as much as choosing the right part. Here’s why procurement managers across Africa, the Middle East, Southeast Asia, and South America trust Mettlead:

• Factory-Direct Pricing – No middlemen, no inflated margins. You deal directly with us, which keeps your costs competitive.
• Complete Parts Range – We cover SINOTRUK, SITRAK, HOWO, SHACMAN, FAW, WEICHAI, DONGFENG, and FOTON. One supplier for all your Chinese truck parts needs.
• Fast and Reliable Delivery – Our streamlined logistics ensure your orders ship quickly, whether by air, sea, or express courier.
• Secure Payment Options – We support flexible, formal, and secure payment methods to protect both parties in every transaction.
• Factory Visits Welcome – We invite you to visit our facilities in China to inspect quality firsthand and build a relationship based on trust.

For a comprehensive overview of all available Sinotruk Sitrak components organized by system, check out our Sinotruk Sitrak Truck Parts Full Category Guide.

Frequently Asked Questions (FAQ)

What is the function of O Ring WG7117349101 in a Sitrak truck?

The O Ring WG7117349101 serves as a static or dynamic seal within the rear axle assembly of Sinotruk Sitrak trucks. Its primary job is to prevent lubricant leakage while simultaneously blocking external contaminants like dust and water from entering the sealed area. Without a properly functioning O-ring, you risk gear oil loss and accelerated wear on internal components.

How do I know if my O Ring WG7117349101 needs replacement?

Common signs include visible oil seepage or wet spots around the rear axle housing, a noticeable drop in lubricant levels without an obvious external leak, or during routine maintenance when the seal appears cracked, flattened, or hardened. If the O-ring has lost its round cross-section or feels brittle to the touch, it’s time for a replacement.

What material is this O-ring made from?

Our standard O Ring WG7117349101 is manufactured from high-grade NBR (Nitrile Butadiene Rubber), which offers excellent resistance to petroleum-based oils and fuels. For higher-temperature applications, we also offer FKM (Viton) variants upon request. Both materials maintain their sealing properties across a wide temperature range.

Is this O-ring compatible with other Sinotruk models besides Sitrak?

The part number WG7117349101 is specifically cataloged for Sinotruk Sitrak vehicles. However, some Sinotruk platforms share common components. If you’re unsure whether this O-ring fits your specific model, please provide your vehicle’s VIN or chassis number, and our technical team will verify compatibility for you.

Can I order this O-ring in bulk quantities?

Absolutely. Mettlead supports orders ranging from small sample quantities to large bulk shipments. For fleet operators and distributors who go through sealing components regularly, we offer volume pricing that makes stocking up even more cost-effective. Simply reach out with your required quantity for a tailored quote.

How should I store O-rings to maximize their shelf life?

Store O-rings in a cool, dry environment away from direct sunlight, ozone sources, and chemical vapors. Keep them in their sealed packaging until installation. Avoid hanging them on hooks or nails, as this can cause deformation. Properly stored elastomer seals can maintain their properties for several years.

Get Your O Ring WG7117349101 Quote Today

Ready to secure competitive pricing on the O Ring WG7117349101 Sinotruk Sitrak? Don’t let a worn seal turn into an expensive repair. Reach out to our team now, and we’ll respond with pricing, availability, and lead time within 24 hours.

Contact Us today to request a quote, ask technical questions, or discuss bulk order requirements. Our experienced parts specialists are standing by to help you find exactly what your fleet needs.