We’ll consult with you to find a solution and source a list of suppliers with products available that meet your specifications.


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Free standard shipping on orders over $99
Estimated to be delivered on 12/05/2025 - 15/10/2025.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
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|
Item |
HNBR O-RING |
|
Usage |
Automotive, Air conditioning, Oil&Gas products. etc. |
|
Model Number |
Standard |
|
Brand |
DMB |
|
Color |
customize |
|
Size |
Full Size |
|
OEM |
Yes |
|
Full name |
HNBR O RING |
When choosing HNBR O-rings for your specific use, it's important to grasp the diverse performance attributes tied to the range of acrylonitrile content (ACN) - here, 17 to 49 percent. The material's performance in low temperature applications tends to decrease as the ACN content increases. Conversely, higher ACN values exhibit improved resistance to polar lubricants and fuels. DMB SEAL also carries standard durometers of 70, 80, and 90 in HNBR O-rings. As such, there is a wide array of potential HNBR O-ring solutions to meet your specific application needs.
If you’re unsure of what ACN or durometer value is appropriate for your application, the experts at DMB Seal can assist. Simply contact us with any questions you have, and we’ll gladly guide you to the right HNBR sealing solution.
BENEFITS OF HNBR O-RINGS
HNBR O-rings surpass standard nitrile rubber (NBR) O-rings in performance. The “N” in HNBR stands for “Nitrile”, while the “H” indicates the addition of hydrogen to the chemical compound. This hydrogenation process significantly enhances the nitrile rubber's toughness and temperature resilience, even in severe environments. HNBR O-rings possess a wide temperature range (- 23ºF to 300ºF), and exhibit greater resistance to wear, tear, and compression than their NBR counterparts. HNBR O-rings also exhibit excellent weathering resistance.
COMMON USES AND APPLICATIONS OF HNBR O-RINGS
HNBR O-rings are commonly found in automotive, air conditioning, and oil and gas products. They are particularly efficient in modern coolant systems that employ R134a coolant. Traditional neoprene O-rings tend to degrade and break down faster in these systems. However, HNBR O-rings excel under such conditions, proving to be an optimal choice for hydrochlorofluorocarbon (HCFC) coolant systems. It's worth noting that the type of lubricant used is also critical in these systems; R134a is incompatible with older PAG lubricants but synergizes well with mineral oil and HNBR O-rings.
LOOKING FOR A CUSTOM SOLUTION?
We know how crucial it is for you to have parts that perfectly fit your needs. With our in-house manufacturing capabilities, we can create custom parts to ensure you get the right sealing solution for your application.
Your sealing solution is three steps away
01.Let’s talk.
Tell us about your specific application, and we’ll pair you with an industry expert to understand what you need.
02.Consult with an expert.
We’ll consult with you to find a solution and source a list of suppliers with products available that meet your specifications.
03.Get the right sealing solution.
Order confidently, knowing that you’re getting the right sealing solution that will arrive on time, perform well, and last.
THE DMB SEAL ADVANTAGE
We're here to help in selecting the right sealing solution. Tell us your specifications, and we'll partner with you to find the ideal seals for your next project. Contact DMB SEAL to find out more about our O-ring selection and custom solutions.
| Temperature Resistance | Operates reliably in a broad range from -20°C to +250°C (-4°F to +482°F), with short-term tolerance up to +300°C (+572°F) |
| Chemical Resistance | Excellent resistance to oils, fuels, acids, solvents, and hydrocarbons |
| Low Compression Set | Maintains sealing integrity under prolonged stress. |
| Aging & Weather Resistance | Resists ozone, UV exposure, and oxidation. |
| Compliance | Meets industry standards such as ASTM D2000, ISO 3601, and SAE J200. |
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
| Sizes | Custom or standard dimensions per AS568 or ISO 3601 specifications |
| Colors | Black (standard), other colors upon request |
| Certifications | RoHS, REACH, and FDA-compliant options available |
| Hardness | 70–90 Shore A (customizable) |
| Pressure Rating | Up to 25 MPa (3,625 psi), depending on design |
| Packaging | Standard: Bulk packaging or individually sealed bags. Custom: Labeled boxes with barcode support for traceability |
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