Royal Enfield 141109/1 – Rear Hub Grease Seal 25×40×7 for Classic 350, Classic 500, Bullet 350/500, Electra, Thunderbird & Continental GT 535 – Genuine OEM

The Royal Enfield 141109/1 Grease Seal 25×40×7 is the genuine rear hub grease/oil seal used in the rear wheel assemblies of many Royal Enfield singles – including Classic 350, Classic 500 EFI, Bullet 350/500, Electra 350, Thunderbird 350/500 and Continental GT 535. Official microfiche and parts portals list this part as “GREASE SEAL 25X40X7 / RR.HUB GREASE SEAL”, confirming it as the factory-fitted rear hub seal on these models. 

Its job is simple but critical: it keeps grease in and dirt/water out of the rear hub bearings. When this seal hardens, cracks or gets damaged during tyre changes, moisture enters the hub, causing bearing noise, play, rust and premature failure. Replacing it with a 141109/1 genuine OEM seal ensures correct lip profile, rubber compound and 25×40×7 sizing, so it seats perfectly in the hub and runs true on the spindle. 

Multiple trusted sellers show 141109/1 as a common rear hub seal for UCE and older cast-iron Bullets and Thunderbirds, with wide usage across Classic 350/500, Bullet 350/500, Thunderbird 350/500 and Continental GT 535. 

If you’re doing rear wheel bearing service, hub rebuilds or tyre changes, this is the small, inexpensive part that protects your bigger, costlier components – always use genuine instead of generic local seals.

Key Features (6–10)

• Genuine Royal Enfield OEM rear hub grease seal – Part No. 141109/1. 

• Correct 25×40×7 size and profile for Royal Enfield rear hubs. 

• Officially listed as “RR.HUB GREASE SEAL” / “GREASE SEAL 25X40X7” in parts documentation. 

• Used across many models: Classic 350, Classic 500 EFI, Bullet 350/500, Electra 350, Thunderbird 350/500, Continental GT 535, etc. 

• Keeps grease inside the hub and dust/water out, protecting wheel bearings and spacer.

• Helps prevent bearing noise, wobble/play and premature bearing failure.

• OEM rubber compound for proper sealing, flexibility and durability over long use.

• Fits cleanly without modification – no filing or shimming needed when hub is in good condition.

• Ideal to change whenever you replace rear bearings or tyres for preventive maintenance.

• Supplied as a single seal – refer to your microfiche to check if your hub uses one or two per wheel.

Compatibility Table

Core spec: Rear hub grease seal for Royal Enfield single-cylinder models using 25×40×7 rear hub bearings.

ONLY ORDER AFTER CONFIRMING PART NUMBER

Variants

• Single Variant:

  • 141109/1 – Rear Hub Grease Seal 25×40×7

  • Color: Black (rubber/metal seal)

  • Sold per piece on underthehood.co.in

  • OEM bulk boxes usually contain 5 pcs – listing is for individual seal, not box. 

FAQs

Q1. What does the 141109/1 grease seal actually do?
It seals the rear hub bearing area, keeping grease inside and preventing dust, mud and water from entering. This protects the bearings and spacer, reducing noise and premature wear.

Q2. Will this fit my Classic 350 or Classic 500 UCE?
Yes. Genuine-parts sellers list Classic 350 and Classic 500 EFI among the confirmed models for 141109/1 – Grease Seal 25×40×7. 

Q3. Is this the same as a fork oil seal or engine oil seal?
No. This is a rear hub grease/oil seal specifically sized for the wheel hub (25×40×7). Fork seals and crank seals use different dimensions and part numbers.

Q4. How many seals do I need for my rear wheel?
Many hubs use two seals (one each side of the hub), but some kits are supplied with one and ask you to order an extra 141109 for certain models (like Himalayan 411). Always check your model’s parts diagram or ask your mechanic before finalizing quantity. 

Q5. Can I use a local generic 25×40×7 seal instead?
Physically it may fit, but OEM seals use the correct lip design, material and tolerances for Royal Enfield hubs. A poor-quality seal can leak, overheat or wear the bearing seat, costing more in the long run.