3213896 Imer Oil Seal for Workman Mixers

Features

• Sold Individually
• Fits the workman 250, 350 and 420 models
• Motor / gearbox seal

The 3213896 Imer Oil Seal for Workman Mixers is a genuine OEM gearbox oil seal engineered to keep gear oil inside the transmission and contamination out, ensuring long‑lasting, trouble‑free operation of IMER Workman concrete mixers. Specified in IMER’s own parts manuals as “OIL SEAL RING 72x52x8”, this seal sits in the Workman gearbox assembly and is critical for protecting gears, bearings, and shafts on Workman 250, 350, 420 and related models.

What Is the 3213896 Imer Oil Seal?

The 3213896 Imer Oil Seal for Workman Mixers is an OEM shaft seal used in the gearbox of IMER Workman series mixers. It is sold under several nearly identical descriptions:

• “3213896 Imer Oil Seal for Workman concrete Mixers” (Contractors Direct).

• “Imer Oil Seal for Workman Mixers – SKU: 3213896” (Blades Direct).

• “3213896 Imer USA SEAL 72X52X8 EACH – IMER USA repair part.”

In the official Workman 250 II parts manual, IMER lists this component in the gearbox table as:

• “3213896 – OIL SEAL RING – 72x52x8”.

These references confirm that 3213896 is the correct oil seal for the Workman gearbox assembly, with precise metric dimensions and OEM fit.

Dimensions and Technical Specification

The 3213896 oil seal is defined in IMER documentation as a 72 x 52 x 8 seal, describing its metric dimensions.

From IMER parts and manuals:

• Part number: 3213896.

• Description: “Oil seal ring 72x52x8” / “SEAL 72X52X8 EACH.”

• Size:

  • 72 mm outer diameter.

  • 52 mm inner diameter (shaft size).

  • 8 mm thickness.

• Type: Radial oil seal for gearbox shaft (motor/gearbox seal).

This seal is designed to fit into a machined bore in the Workman gearbox housing (72 mm OD) and seal around a 52 mm rotating shaft, maintaining a tight, oil‑resistant barrier.

Which Workman Mixers Use the 3213896 Oil Seal?

Retail listings and IMER documentation show that the 3213896 Imer Oil Seal is used on multiple Workman mixer models.

GardenToolX summarizes it clearly:

• “3213896 Imer Oil Seal for Workman Mixers – Fits the Workman 250, 350 & 420 models – Motor / gearbox seal.”

Contractors Direct similarly lists:

• “3213896 Imer Oil Seal for Workman concrete Mixers” within their OEM parts category.

In the Workman II 250 Multimixer parts list, Table 2 “Gear Box” shows:

• RIF 2 – COD 3213896 – DESCRIPTION: OIL SEAL RING 72x52x8 in the gearbox assembly (COD. 3208746).

Cross‑references from IMER Parts also list 3213896 among general IMER mixer parts, alongside keys, bearings, and other gearbox components.

Together, these sources confirm 3213896 as the standard motor/gearbox oil seal on Workman 250, Workman 350, and Workman 420 mixers, and similar Workman II variants.

Function: What the Oil Seal Does in a Workman Mixer

In IMER Workman mixers, the gearbox is a sealed gear reducer that transfers power from the engine or electric motor to the drum. The 3213896 oil seal plays a critical role inside this assembly:

• It retains gear oil inside the gearbox, ensuring gears and bearings are continuously lubricated.

• It prevents dust, mortar, water, and slurry from entering the gearbox along the drive shaft.

• It helps maintain the gearbox as a “sealed for life” component, as described in the Workman 250 II manual, which notes that the gearbox is sealed and oil changes are generally not required.

The same gearbox table where 3213896 appears also lists related parts like the gearbox flange, flange gasket, bearings, gear wheel, and shear pin, highlighting that the seal is part of a carefully designed closed lubrication system.

If this seal fails, gear oil can leak out and contaminants can enter, leading to overheating, noisy operation, and eventual gearbox failure.

OEM Quality and Construction

IMER Parts describes 3213896 as a “top‑of‑the‑line replacement and repair part… designed to provide maximum durability and performance.”

From the IMER Parts product description:

• The 3213896 SEAL 72X52X8 EACH is “designed to provide maximum durability and performance, ensuring that your equipment operates at its best.”

• It has “precise measurements and superior construction,” providing long‑lasting results and saving time and money over inferior parts.

• It is positioned as a reliable, high‑quality replacement that maintains the efficiency and safety of your equipment.

Using an OEM seal ensures:

• Correct interference fit in the gearbox housing (72 mm OD).

• Proper lip tension on the 52 mm shaft to seal oil without excessive friction.

• Compatibility with gear oil chemistry and operating temperatures in Workman mixers.

Cheap or generic seals with incorrect tolerances or materials can leak prematurely or wear grooves into the shaft, so IMER and its distributors recommend the OEM 3213896 for gearbox repairs.

Signs Your Workman Mixer Needs a New Oil Seal

Because the 3213896 oil seal protects the heart of the mixer drivetrain, replacing it when worn is essential. Common signs that it’s time to install a new seal include:

• Gear oil leaks visible around the gearbox flange or beneath the mixer.

• Oil drips near the motor / gearbox junction, matching the “motor/gearbox seal” description.

• Noisy gearbox (whining or grinding) that may indicate low oil level due to leakage.

• Oil contamination visible on nearby components or the drum support arm.

• During disassembly for bearing or gear replacement, the old seal shows cracking, hardening, or damaged sealing lip.

Given that the Workman gearbox is described as “sealed for life,” any evidence of leakage should be taken seriously, and typically the 3213896 oil seal, flange gasket, and appropriate bearings are replaced together.

Relationship to Other Seals and Gearbox Components

Workman mixers use more than one seal in the drivetrain. The 3213896 oil seal is specifically the 72x52x8 seal in the gearbox, but IMER manuals show additional seals and related parts.

For example, the Workman 250 II gearbox table lists:

• 3213896 – OIL SEAL RING 72x52x8 (gearbox primary seal).

• 3200094 – OIL SEAL RING 35x20x7 (another shaft seal in the same gearbox).

• Bearings like 2204440 (6004) and 3213899 (6209 SKF) supporting gearbox shafts.

• Gearbox flange 3209681 and flange gasket 3213887.

• 2228360 – SHEAR PIN protecting the gearbox from overload.

When servicing a leaking gearbox, technicians often replace 3213896 along with other seals and possibly bearings, especially if oil loss has led to overheating or contamination.

IME R’s global parts list also shows 3214031 “OIL SEAL RING – C1000” and other seal part numbers, confirming that each mixer and gearbox variant uses specific seals—and 3213896 is the correct one for the Workman gearbox configuration.

How to Confirm 3213896 Is the Correct Seal for Your Mixer

Before ordering, you should verify that 3213896 is correct for your specific Workman model and gearbox version. Steps:

1. Check your model and serial number: Workman 250 II, 350, 420 or older Workman mixers can have different gearboxes.

2. Consult the parts manual: For example, the Workman II 250 Multimixer manual lists 3213896 in the gearbox table for gearbox code 3208746.

3. Look for “OIL SEAL 72x52x8” or part number 3213896 in the parts list.

4. Cross‑check reseller descriptions: Most retailers explicitly state “Fits Workman 250, 350 & 420 models – Motor / gearbox seal.”