Single Lip Nitrile Rotary Shaft Seal (2.813x4.003x0.438 Inch)

Single Lip Nitrile Rotary Shaft Seal (2.813x4.003x0.438 Inch)

Marsoni

M251S

$24.95

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

Single Lip Nitrile Rotary Shaft Seal (2.813x4.003x0.438 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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I've taken a couple classes on SQL some time ago and was looking for a book to go over basics. This is a perfect book to start with the basics of understanding how to write a SQL query. I really liked that there is a free database to use in SQLite to follow along with the examples in the book. That was very helpful for me. I appreciated the tips throughout the chapters and the practice questions at the end. Easy to read and follow.

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Reviewed in the United States on April 27, 2023

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pandajama

Grantham, US

★★★★★ 5

This is a good very distant overview

Format: Paperback

Sometimes I need a really simplistic overview of an entire subject before I feel comfortable sitting down to learn it. Like if you are going to learn about, say, 13th Century France you might want to know just a little about the major issues of the entire century before sitting down with a text book. This book is good for that. It's short, it gets you started with the main keywords, and at the end you have a good picture of what the language can do. And you can get to the end in a day or two. It's very well written, well organized, clear, and very very limited in scope. But if you read it, you will be in good shape to start getting down to business with working with SQL with a more advanced text. This book, in my opinion, was well worth the money and the read even though ultimately I turned to something far more advanced.

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Reviewed in the United States on October 12, 2024

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Matthew Holtsby

West Palm Beach, US

★★★★★ 5

Great For Beginners

Format: Paperback

Easy to follow, concepts clearly explained... Great for beginners!

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Reviewed in the United States on December 22, 2025

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idris

Natrona Heights, US

★★★★★ 5

Awesome book

Format: Paperback

Its a good book, trust me you wont regret it.

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Reviewed in the United States on April 28, 2026

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Big Fat Mike

San Leandro, US

★★★★★ 3

Does a good job, but too much philosophy.

Format: Kindle

I'm about halfway through this book. I have a condition that makes it hard to read. This book does a good job of teaching SQLite but spends too much time stressing the importance of comments and style. I agree, that these things are important, however, not to the audience of the book. The reader would have been better served by getting into the grit of SQL syntax and which keywords to use when versus ensuring that every query had a comment block with name, date, and description. Moreover, requiring every reader to download a prewritten database to work from and special utilities to follow along takes away from the learning experience. That said, you will learn the basics about SQLite, and by the end of the book be able to handle most problems you'll encounter when developing an application.

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Reviewed in the United States on November 9, 2020