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Single Lip Nitrile Rotary Shaft Seal (3x4.5x0.438 Inch)
Single Lip Nitrile Rotary Shaft Seal (3x4.5x0.438 Inch)
Single Lip Nitrile Rotary Shaft Seal (3x4.5x0.438 Inch)
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Single Lip Nitrile Rotary Shaft Seal (3x4.5x0.438 Inch)

Marsoni M251S
Sale price$21.36
Pay 4 payments of $5.34 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Single Lip Nitrile Rotary Shaft Seal (3x4.5x0.438 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.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 713 reviews
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Product Reviews
M
Verified Purchase
Mort
Lowell, US
★★★★★ 5
Great wire
Size: 2 Colors each 10FT, Style: 22AWG
I needed a flexible durable wire to fix an old model train. It worked perfect. Wire is generally wire. If you require all the special features of this wire it will meet all your needs
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2020
A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 5
Nice quality
Had to return due to our mistake but the mechanic said it was good quality. Ordered the correct size and worked great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2025
K
Verified Purchase
katelyn traut
Los Angeles, US
★★★★★ 5
Perfect fit
Worked great for a 1965 mercury thunderbolt 150hp
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2025
L
Verified Purchase
Lawrence Brown
Dallas, US
★★★★★ 5
MerCruiser Replacement Parts
OEM quality MerCruiser Alpha 1 Gen1 replacement part. Everything you need and some things you don't because it's a universal kit that works for several models.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 19, 2025
O
Verified Purchase
Owen Shirk
Lexington, US
★★★★★ 5
OEM is always the answer
No reason not to go OEM for this! Came with every possible gasket and seal I could need. Specifically for my Alpha One Gen 1 it took maybe 25-30 min to completely install. While you’re there check the base plate for wear and the other surrounding items like your water tube. Rather keep the lower unit off for an extra day to get another part than a catastrophic failure.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 9, 2025

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