Single Lip Nitrile Rotary Shaft Seal (4.25x5.501x0.438 Inch)

Single Lip Nitrile Rotary Shaft Seal (4.25x5.501x0.438 Inch)

Marsoni

M251S

$28.29

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

Single Lip Nitrile Rotary Shaft Seal (4.25x5.501x0.438 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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I’m so happy with these orange tennis balls! They’re the perfect size for Roxy’s ball launcher, and the bright orange color makes them super easy to find—no more losing them in the grass! Roxy goes wild for them, and they’re holding up really well even with all her chomping and fetching. If you’re looking for fun, durable balls that stand out, these are a winner!

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Reviewed in the United States on May 21, 2026

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R. Mandino

Cuba, US

★★★★★ 5

Cheap but good for what we do!

Color: Dark Blue

I wouldn't play tennis with them -- not that quality. However, we use a chuck-it thrower for our pooch and it's the perfect ball. When she's rips them open it's no big loss. Chinese.

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Reviewed in the United States on February 10, 2026

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Ashley Reyes

Chelsea, US

★★★★★ 4

Good Quality but Lose Bounce Over Time

Color: Yellow

Solid tennis balls overall, but after a couple of weeks of daily use they start losing pressure. Still a great deal for casual games or practice.

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Reviewed in the United States on October 29, 2025

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Becca

Louisville, US

★★★★★ 5

My dogs are obsessed with these

Color: Multicolour, Color: Multicolour

Red, Molly, and Karma are absolutely obsessed with these tennis balls. They’re bright and easy to spot outside in the grass, hold up surprisingly well during rough play, and don’t immediately shred apart like a lot of dog toys do. Great for fetch and everyday play time — definitely a favorite in our house.

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Reviewed in the United States on May 22, 2026

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Kimberly Brown

West Palm Beach, US

★★★★★ 3

Not Tough Enough

Color: Multicolour

Not as tough as Wilson’s. Easy to be chewed and busted by pet.

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Reviewed in the United States on May 17, 2026