Apple Rubber

In our latest blog, we'll explore the Shore hardness scales and how they impact the performance of elastomeric components.

As a critical parameter in rubber engineering, compression set impacts everything from seal longevity to overall system reliability. Let's explore the science behind this phenomenon and why it matters for your applications.

Looking for a reliable, cost-effective sealing solution? Nitrile (NBR), also known as Buna-N, remains the industry's most widely used elastomer for a good reason! This versatile material offers: -Excellent resistance to petroleum-based oils, fuels, and hydraulic fluids -Superior performance with silicone greases, water, and alcohols -Low compression set for long-term reliability -High tensile strength and abrasion resistance With a standard temperature range of -40°F to 257°F (and special compounds reaching -67°F to 275°F), nitrile performs reliably in automotive, marine, aircraft fuel systems, and off-road equipment. Available in hardness ranges from 40 to 90 Shore A, and in Hydrogenated Nitrile (HNBR) versions for enhanced abrasion resistance, ozone, and higher temperature resistance, nitrile can be tailored to meet your specific application needs. https://bit.ly/3DJLSYB

Did you know the o-ring dates back to 1896? Swedish inventor J.O. Lundberg received the first patent, but it was Danish-born machinist Niels Christensen who filed the US patent in 1937. Christensen's brilliant design described a "circular section ring made of solid rubber or rubber composition" with a unique "kneading action" that prolonged its life. During WWII, the US government commandeered the patent as a critical war item, and Christensen only received $75,000 for his innovation. Amazing how something so simple helps keep our modern world sealed tight!

Don't wait for costly failures! Learn how proper inspection schedules, material compatibility, pressure monitoring, and temperature management can dramatically extend the life of your o-rings.

Apple Rubber just returned from MDM West 2025 in Anaheim. Our booth was buzzing with visitors. Thanks to everyone who stopped by! For a recap of this year’s show in Anaheim, read our latest Hot Topic.

Happy Engineers Week! At Apple Rubber, we're proud to celebrate the innovative minds who turn ideas into reality. Our engineering team works tirelessly to solve complex sealing challenges, pushing the boundaries of what's possible in elastomer technology. They always appreciate the unique challenges our customers present us with. From designing custom o-rings for aerospace applications to developing cutting-edge materials for medical devices, our engineers are dedicated to creating solutions that make a difference in countless industries. To all engineers out there – thank you for your creativity, problem-solving spirit, and commitment to excellence. Your work shapes our world and inspires the next generation of innovators.

Understanding material behavior in extreme cold is crucial for reliable seals - here's your guide to selecting the right solution for sub-zero applications ??

Engineers have our hearts at Apple Rubber ?? We understand what you love: precision-crafted o-rings and seals, plus the material science expertise to handle your toughest challenges. When tolerances matter, we deliver. From standard solutions to custom compounds, we're here to make your designs a reality. Visit Apple Rubber today - https://bit.ly/4aVUCH6

Trying to understand UL listings? Surprise: UL 157 is just a test method - not a listing. Apple Rubber compounds are actually certified under JMLU2. Read our latest Hot Topic on navigating UL standards and selecting the right compound for your application.