Single Lip Nitrile Rotary Shaft Seal (3.438x4.249x0.375 Inch)

Single Lip Nitrile Rotary Shaft Seal (3.438x4.249x0.375 Inch)

Marsoni

M251S

$18.69

Get it in 3 business days with 1 day shipping. Friday, May 29

Single Lip Nitrile Rotary Shaft Seal (3.438x4.249x0.375 Inch)Acrylonitrile butadiene rubber (NBR) is the material name for nitrile rubber. This material is very good for seals due to its make up. Nitrile rubber can tolerate short term dry running of the sealing lip. The operating temperature range without failure of nitrile rubber is 40 to +100 C. This also offers a special nitrile rubber compound with a temperature range between 55 and +110 C. Please click here for a full in depth look at the range of seals

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Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
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My daughters 2008 Honda Accord 2.4L 4 cylinder that had a very noisy power steering pump which was also starting to leak. I was about to buy a new pump when I found out it might just be leaking from the hoses to the pump. I bought these O rings for the hose connections at the power steering pump, and spent 15 minutes replacing them. Pump is quiet again! The suction hose can develop a leak, letting air get into the pump which creates the loud noises. This fix is all I needed, and was much cheaper and faster than replacing the power steering pump.

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Reviewed in the United States on March 10, 2026

Verified Purchase

Josh

Port Orchard, US

★★★★★ 5

Perfect!

Fits exactly on my 2000 civic and I have not had any issues!

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Reviewed in the United States on February 18, 2026

Verified Purchase

Amazon Customer

Lexington, US

★★★★★ 5

Good brand

They work good so far.

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Reviewed in the United States on March 4, 2026

Verified Purchase

Amazon Customer

Natrona Heights, US

★★★★★ 5

Perfect fit for 2004 Honda Element, Fixed leak!!

Perfect fit for 2004 Honda Element Dx. Fixed my power steering leak and was super easy to install. Took 5-10mins at most. Would definitely buy again, 5/5 stars!!!

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Reviewed in the United States on December 26, 2025