Double Lip Polyaylate Rotary Shaft Seal (2.75x4.249x0.438 Inch)

Double Lip Polyaylate Rotary Shaft Seal (2.75x4.249x0.438 Inch)

Marsoni

M251S

$24.95

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

Double Lip Polyaylate Rotary Shaft Seal (2.75x4.249x0.438 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 kit had every single piece needed for my Alpha water pump - and many I didn't need. I guess it fits basically all the different versions out there. I remember when the single kits cost more and had much less. This is a good high-quality alternative. Stock up on them now - you'll need one eventually.

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Reviewed in the United States on July 28, 2025

Verified Purchase

Austin Williams

Carnegie, US

★★★★★ 5

Great bang for your buck!

Swapped out my old impeller and this helped fix my overheating issue. Super high quality, fit like a glove. If you know what you’re doing it’ll take you an hour tops. Super solid for the price! Fit into my 1990 alpha one gen 1 outdrive on my 4.3 Mercruiser.

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Reviewed in the United States on June 22, 2025

Verified Purchase

Jesse Simpson

Lexington, US

★★★★★ 4

Decent Kit

It's a pretty decent kit. Comes with all the lower unit options whether yours needs that particular part or not.

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Reviewed in the United States on June 22, 2025