Single Lip Nitrile Rotary Shaft Seal (4x5.251x0.438 Inch)

Single Lip Nitrile Rotary Shaft Seal (4x5.251x0.438 Inch)

Marsoni

M251S

$31.88

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

Single Lip Nitrile Rotary Shaft Seal (4x5.251x0.438 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.
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I bought these to try out, and I was shocked to find they worked out better than my silk pillowcases. I have atopic dermatitis, and I need a pillowcase that doesn't irritate my skin. I also am having hot flashes and need something cool on my face. These pillowcases are perfect for both my conditions. I plan to buy more in different colors. My sons and husband also like it since they are always hot.

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Reviewed in the United States on May 30, 2026