Shacman Oil Seal Size and Part Number Guide

I use three checks to identify a Shacman oil seal correctly: the measured dimensions, the application, and the original or cross-reference part number. A typical oil seal size is written as inner diameter × outer diameter × width, such as 95 × 120 × 12 mm; this example is for explaining the format and is not a universal Shacman specification. Because similar-looking seals can differ in rubber compound, lip design, dust protection, or rotation direction, I recommend confirming the complete specification before requesting a quotation or placing an order.

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This guide explains how I help B2B buyers query and verify Shacman oil seal sizes, part numbers, materials, and application details. It is intended for truck parts distributors, repair workshops, fleet maintenance teams, machinery importers, and purchasing departments that need a reliable basis for sourcing. When a part number is unclear or unavailable, accurate measurements and application information can provide a practical starting point for technical confirmation.

Who This Shacman Oil Seal Guide Is For

I designed this guide for buyers who may have an old seal, an incomplete label, or a supplier listing with limited technical information. It is also useful when a buyer needs to compare an original Shacman replacement with an aftermarket equivalent. The goal is not to guess a part number, but to reduce identification errors before production, quotation, or shipment.

Shacman oil seals can be used in areas such as axle assemblies, wheel ends, hubs, gearboxes, transmission-related systems, and other rotating shafts, depending on the vehicle model and assembly. The correct seal must match the shaft, housing, lubricant, speed, temperature, and installation environment. I therefore treat vehicle information and seal measurements as complementary evidence rather than relying on either one alone.

What a Shacman Oil Seal Size Means

Most radial oil seal dimensions are expressed in millimeters using the sequence shaft diameter × housing diameter × seal width. The inner diameter corresponds to the shaft, the outer diameter corresponds to the housing bore, and the width indicates the axial space occupied by the seal. For example, a notation of 95 × 120 × 12 mm describes a 95 mm inner diameter, a 120 mm outer diameter, and a 12 mm width.

I always distinguish nominal dimensions from actual measured dimensions. A used seal may be distorted, worn, swollen, or damaged during removal, so its measurement may not represent the original design size. For that reason, I compare the removed component with the housing and shaft dimensions whenever possible, and I record the unit, measuring tool, and location of every measurement.

Measurements I Ask Buyers to Record

• Inner diameter: measure the shaft diameter or the seal’s designed shaft contact diameter.
• Outer diameter: measure the housing bore, preferably at more than one point if wear is suspected.
• Width: measure the axial installation space and check whether a wider or narrower seal is acceptable.
• Seal profile: record the number of lips, dust lip, metal case, rubber-covered exterior, and any auxiliary features.
• Rotation details: note whether the shaft rotates in one direction or in both directions.

For best accuracy, I recommend using a micrometer or calibrated vernier caliper for the shaft and a suitable bore measuring method for the housing. I also ask for clear photographs showing the front face, back face, and any markings. A photograph cannot replace measurements, but it can reveal a molded code, directional groove, metal case style, or visible damage that supports identification.

How to Verify a Shacman Oil Seal Part Number

A part number is useful only when it is linked to the correct vehicle, assembly, and revision. Some numbers may be printed on packaging, stamped on a metal case, molded into rubber, or shown in a parts catalogue. I do not treat an isolated number as conclusive because formatting, supplier codes, catalogue revisions, and regional references may differ.

Step 1: Collect the Vehicle and Assembly Information

I begin with the Shacman truck model, production information if available, axle or transmission type, and the exact installation position. “Front axle seal” or “rear hub seal” is often not specific enough for a final match because one vehicle family may contain more than one assembly configuration. The buyer should also state whether the seal is for original equipment replacement, repair stock, or a new production project.

Step 2: Record Every Marking

I ask the buyer to copy all visible letters, numbers, symbols, and manufacturer marks exactly as they appear. A missing dash, reversed digit, or unreadable character can lead to a different part reference. If the marking is incomplete, I use the available code together with the dimensions and application rather than presenting an uncertain match as confirmed.

Step 3: Compare Dimensions and Profile

The part number should be checked against the measured inner diameter, outer diameter, and width. I also compare the lip construction, case design, dust exclusion feature, and material requirements. If the dimensions match but the profile does not, I treat the item as requiring technical review instead of assuming it is interchangeable.

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Step 4: Confirm Operating Conditions

I ask about the lubricant, shaft speed, operating temperature, contamination level, and installation environment. A general-purpose elastomer may be suitable for one application but unsuitable for high heat, aggressive fluids, abrasive dust, or continuous water exposure. As a reference point, NBR compounds are commonly specified for moderate oil-sealing duties, while the final temperature and fluid limits must be confirmed for the selected compound and formulation.

Material and Construction Options

The most suitable material depends on the operating conditions rather than the vehicle name alone. NBR is widely used for conventional oil and grease sealing applications, while FKM is often considered when higher temperature or improved chemical resistance is required. PTFE-based sealing elements may be considered for demanding friction, chemical, or temperature conditions, but they require careful design and installation control.

Compound hardness is another specification that should be confirmed rather than guessed. A commonly discussed rubber hardness reference is 70 Shore A, but the correct hardness depends on pressure, shaft condition, lip design, and the manufacturer’s formulation. I therefore quote material and hardness as technical options for review, not as universal requirements for every Shacman oil seal.

The seal may also include a single sealing lip, a primary lip with dust lip, a metal reinforcement case, or a rubber-covered outside diameter. These features influence installation, contamination resistance, heat dissipation, and housing retention. If the original seal has a special groove, garter spring, directional pattern, or integrated dust-exclusion structure, I recommend sending a sample or detailed drawing before production confirmation.

Buyer Selection Framework

I recommend giving the supplier a complete inquiry package instead of sending only the keyword “Shacman oil seal.” At minimum, I include the part number if available, dimensions, application position, quantity, material preference, and photographs. This allows the supplier to identify missing information before issuing a quotation and helps prevent an apparently low-cost but incorrect item from entering the purchasing process.

Common Sourcing Mistakes

One common mistake is selecting a seal by outer diameter alone. Another is assuming that every seal with the same three dimensions has the same material, lip geometry, or rotation capability. I also see buyers rely on an online listing without checking whether the stated part number belongs to the same Shacman model, axle configuration, or application position.

Another risk is measuring a damaged seal after removal and ignoring housing or shaft wear. A worn shaft can allow leakage even when the replacement seal has the correct nominal dimensions. I advise buyers to inspect the shaft surface, sealing groove, housing bore, and installation direction before approving a replacement.

How TEBIETE Supports Shacman Oil Seal Sourcing

At TEBIETE, I support B2B buyers with Shacman oil seal identification based on dimensions, part numbers, photographs, samples, drawings, and application details. I can organize the inquiry around standard size, material, profile, quantity, packaging, and delivery requirements. When information is incomplete, I identify the uncertainty clearly so the buyer can provide the next useful detail.

For repeat purchasing, I recommend creating a controlled product record that includes the confirmed dimensions, approved material, seal profile, reference number, sample status, and inspection requirements. This makes future quotations easier to compare and reduces the chance that a visually similar but technically different seal will be ordered. For new or uncertain applications, a sample review or fitment confirmation should be agreed before moving to larger-volume production.

Key Takeaways and Next Steps

• Use the size format shaft diameter × housing diameter × width, normally recorded in millimeters.
• Do not confirm a Shacman oil seal by part number alone; match the number with dimensions, profile, and application.
• Specify material according to lubricant, temperature, contamination, speed, and installation conditions.
• Provide photographs, markings, vehicle details, quantity, and destination when requesting a quotation.
• Ask for technical confirmation whenever the sample, catalogue number, or measurements do not agree.

In conclusion, the most reliable way to identify a Shacman oil seal is to verify the part number against the complete dimensional and application specification. I recommend measuring the inner diameter, outer diameter, and width, documenting the seal profile, and confirming the working environment before purchase. To request support from TEBIETE, send the available part number, measurements, photos, vehicle or assembly information, required quantity, and delivery location so I can help prepare a more accurate sourcing review and quotation.

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