Single Lip Nitrile Rotary Shaft Seal (3.5x5.251x0.438 Inch)

Single Lip Nitrile Rotary Shaft Seal (3.5x5.251x0.438 Inch)

Marsoni

M251S

$31.88

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

Single Lip Nitrile Rotary Shaft Seal (3.5x5.251x0.438 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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These are awesome and have become my favorite socks to have for everyday wear. I have since bought the hightop version as well and there are just as equally great. They fit almost like compression socks. Color does fade a bit after repeated washing but not enough to make a big difference in appearance. They have lasted for a long time and still going. They have lots of cushion which makes it very comfortable to wear.

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Reviewed in the United States on April 4, 2026

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kimberly jumper

Cuba, US

★★★★★ 5

Great Socks

Color: (001) Black / Black / Castlerock, Size: Large

I keep ordering these over and over again. They fit well, and are soft and comfortable. My feet don't sweat like crazy while wearing them. The cupped heel makes them fit even better. They hold up to everything from everyday use to active lifestyles.

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Reviewed in the United States on April 9, 2026

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Nelson Giovanny Murcia

Cuba, US

★★★★★ 5

Talla perfecta

Color: (001) Black / Black / Castlerock, Size: Large

Excelente producto

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Reviewed in the United States on April 26, 2026

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Gee Buttersnaps

Fort Morgan, US

★★★★★ 5

Very comfy!

Color: (100) White / White / Halo Gray, Size: Medium

Very soft, fits well.

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Reviewed in the United States on April 28, 2026

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Rachel D.

Dallas, US

★★★★★ 4

Good sock but thick

Color: (001) Black / Black / Castlerock, Size: Small

These Under Armour socks are high quality and definitely durable, with great cushioning and a solid fit that stays in place throughout the day. The material feels supportive and they hold up well after multiple washes without losing shape. My only minor downside is that they’re thicker than I expected. They feel more like a heavy-duty training sock, which is great for colder weather or intense workouts, but a bit bulky for everyday sneakers or warmer days. That said, the quality is excellent, and if you prefer a thicker, more cushioned sock, these are perfect. Just something to be aware of depending on how you plan to use them.

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Reviewed in the United States on May 26, 2026