40x55x8 Single Lip Nitrile Rubber Rotary Shaft Seal

40x55x8 Single Lip Nitrile Rubber Rotary Shaft Seal

Marsoni

M251S

$10.09

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

40x55x8 Single Lip Nitrile Rubber Rotary Shaft SealAcrylonitrile 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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You can never go wrong with BarkBox toys and this was no exception. Our dogs like toys that have squeakers and that they can tear into. This style of toy fits the bill. The design is cute as well. I’ve had this in the house for months and, while it’s definitely seen better days, it’s still intact and they haven’t gotten to the inner layer. (Not for want of trying.) The perfect type of toy for our fur babies.

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Reviewed in the United States on February 10, 2026

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Amazon Customer

Bozeman, US

★★★★★ 5

Survives 7 months so far.

Color: Christmas Consuela, Size: Large Dog

It is still intact after nearly 7 months of constant play. My blue heeler normally destroys toys in just a few weeks. Consuela has exceeded expectations of survival with an extremely chewy, destruction prone dog.

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Reviewed in the United States on June 6, 2026

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D. Thomas

New York, US

★★★★★ 4

Short-lived but much enjoyed as a chew toy

Color: Consuela the Cactus - Large, Size: Large Dog

I bought two of these for my "granddogs" in the size for Large dogs. The German Shepherd-mix stole the one intended for the border collie-mix and had both toys halfway destroyed within a day--I'm pretty sure they didn't survive much longer after that. Much enjoyed! Maybe I should've bought the Extra Large size, because the Large barely fit in her mouth and she wanted to play tug-of-war, so there wasn't much for me to grab onto. Then the border collie wanted in on the action (she's older, so she needed help tugging!) but there wasn't enough material for her to grab onto without accidentally sinking her teeth into me instead.

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Reviewed in the United States on December 9, 2025

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Ryan Davisson

Chelsea, US

★★★★★ 5

Best dog toy!

Color: Air Head, Size: Large Dog, Color: Air Head, Size: Large Dog

I got this toy for my dog who loves squeakers not only is it a two in one it actually has three toys inside which I think is amazing!! 10/10 recommend

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Reviewed in the United States on June 11, 2026