Single Lip Nitrile Rotary Shaft Seal (4x5.126x0.438 Inch)

Single Lip Nitrile Rotary Shaft Seal (4x5.126x0.438 Inch)

Marsoni

M251S

$31.88

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

Single Lip Nitrile Rotary Shaft Seal (4x5.126x0.438 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.
Final sale items are not eligible for returns or exchanges.
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This filter looked about the same as the OEM filter. It installed in about a minute. The quality appeared to be fine. It was protected in a cardboard box. It fit my 2014 Subaru Outback perfectly. I just installed it an hour ago so I don’t have any long term observations about longevity or effectiveness. I can’t see any reason why it would not work as well as the original, it seemed identical.

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Reviewed in the United States on May 29, 2026

Verified Purchase

Nicholas K

Chelsea, US

★★★★★ 5

Great filter

Size: AF259

This fit my Mazda CX-5 perfectly. I'm happy with the seal and quality. Great price. I will certainly reorder for my next replacement.

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Reviewed in the United States on May 19, 2026

Verified Purchase

Amazon Customer

Charlottesville, US

★★★★★ 5

Great fit and quality

Size: AF113

Not a complicated product, but after going to 2 different auto parts stores and this not being in stock, Amazon to the rescue. Arrived the next day and the quality is definitely on par with “store brand” ones from retailers. Definitely cheaper as well.

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Reviewed in the United States on April 23, 2026

Verified Purchase

Dallas, US

★★★★★ 5

Fit my 2014 Accord perfectly

Size: AF476

Seems to be the same quality as OEM. Fit perfectly. Easy to install.

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Reviewed in the United States on April 24, 2026

Verified Purchase

Becca