High-Quality Trusted China HNBR O-Ring Manufacturer & Supplier
- Payment Way: T/T, Western Union, Paypal
- Incoterm: EXW, FOB, CIF
- Shipping Way: By Air or Sea
- Manufacturer Place: Ningbo, China
- Delivery Time: 7 - 30 days
- Factory Status: Stocked for Sale
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Description
HNBR O-rings are an upgraded version of NBR O-rings. They retain the characteristics of NBR O-rings, and at the same time, they are better in terms of heat resistance, oil resistance, and weather resistance.
HNBR or HSN is short for Hydrogenated Nitrile Rubber and is a rubber obtained by hydrogenating the carbon-carbon double bonds in the molecular chain of nitrile rubber, so it is also called highly saturated nitrile rubber.
HNBR O-rings are not as widely used as NBR O-rings or FKM O-rings, but they are a necessary choice in some applications. Their price is higher than that of NBR O-rings but similar to that of FKM O-rings.
Specifications
- Material: HNBR / HSN / Hydrogenated Nitrile
- Temperature Range / Rating: -40°C (-40°F) to 150°C (302°F)
- Low Operating Temperature Limit: -40°C (-40°F)
- High Operating Temperature Limit: 150°C (302°F)
- Durometer Hardness Range: Shore A 50-90
- Standard Durometer Hardness: Shore A 70
- Color: Green/Black (standard), custom color is available
- Outline: Round, square, rectangular, custom
- Cross Section Shape: Round
- Cross Section Width (CS): 0.5 to 20 mm (0.020 to 0.787 inch)
- Inside Diameter (ID): 0.7 to 2965 mm (0.028 to 116.732 inch)
- Standard Size: AS 568, BS 1806, ISO 3601, DIN 3771, JIS B 2401
- Shelf Life: 5 – 7 years
- Cost Level: High
Resistance Characteristics
The chart below summarizes the typical resistance characteristics of standard HNBR rubber to common media and environmental factors. Ratings are based on industry-standard evaluations: Excellent (recommended), Good (suitable with limitations), Fair (limited use), and Poor (not recommended).
Excellent
- Oils
- Abrasion
- Compression Set
- Tensile Strength
Good
- Ozone
- Weather
- Chemicals
- Water
- Acids
- Alkali
- Steam
Fair
- None
Poor
- Flame
Material Data Sheet
The following table presents the physical properties and fluid resistance performance of our standard HNBR O-ring material, formulated to meet ASTM D2000 M4DH716 specifications. All test results are based on cured compounds tested per the indicated ASTM methods, including heat aging, compression set, and exposure to Oil No. 1 and Oil No. 3.
This is the Material Data Sheet (MDS) for our standard 70 Shore A HNBR compound. Savvy Rubber also offers and routinely tests 50, 60, 80, and 90 Shore A HNBR formulations. If you require data for other hardness grades, please contact our sales team.
| HNBR Shore A 70 Material Data Sheet | |||
|---|---|---|---|
| Test Standard: ASTM D2000 M4DH716 A26 B16 EO16 EO36 F19 | |||
| ORIGINAL PHYSICAL PROPERTIES | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Shore A | D2240 | 70±5 | 70 |
| Tensile Strength, MPa (psi) | D412 | 16 (2321) min. | 18.05 (2618) |
| Ultimate Elongation, ％ | 250 min. | 305 | |
| Specific Gravity (g/cm³) | — | 1.209 | |
| HEAT RESISTANCE 70H AT 150℃ (A26) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Change, Points | D573 | +10 max. | +8 |
| Tensile Strength Change, % | -25 max. | -7 | |
| Ultimate Elongation Change, % | -25 max. | -18 | |
| COMPRESSION SET, 22H AT 150℃ (B16) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Permanent Set % | D395 | 30 max. | 15 |
| FLUID RESISTANCE IRM 901 OIL, 70H AT 150℃ (EO16) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Change, Points | D471 | -5 to +10 | +3 |
| Tensile Strength Change, % | -20 max. | -6 | |
| Ultimate Elongation Change, % | -30 max. | -12 | |
| Volume Change, % | -10 to +5 | -4 | |
| FLUID RESISTANCE IRM 903 OIL, 70H AT 150℃ (EO36) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Hardness Change, Points | D471 | -15 max. | -6 |
| Tensile Strength Change, % | -40 max. | -17 | |
| Ultimate Elongation Change, % | -30 max. | -16 | |
| Volume Change, % | +25 max. | +8 | |
| LOW TEMPERATURE RESISTANCE (F19) | TEST METHOD | REQUIREMENTS | TEST RESULTS |
| Non-brittle after 3 Min at -40°C | D2137 | PASS | PASS |
Test results are typical values for Savvy Rubber standard Shore A 70 HNBR compound. Actual performance may vary based on operating conditions, fluid concentration, and exposure time. For critical applications, we recommend sample testing.
Features
HNBR o-rings are one of the rubber seals with excellent comprehensive performance. Compared with nitrile o-rings, HNBR o-rings have better abrasion resistance, chemical resistance, tensile strength, tear resistance, and compression set resistance. They also offer significantly improved heat resistance, with continuous service temperatures up to 150 °C (302 °F), and outstanding stability in refrigerants such as R134a and R1234yf, making them particularly suitable for demanding sealing environments involving cooling media.
They have good compatibility with fuels, ozone, sunlight, and other atmospheric conditions, but they are not recommended for use in alcohols, esters, or highly aromatic hydrocarbons.
Applications
HNBR o-rings are commonly used in the air conditioning and refrigeration industry and are widely used as seals in systems using environmentally friendly refrigerants such as R134a and R1234yf, as well as automotive engine system seals.
With the development of the automobile and petroleum industry, oil drilling requires rubber products to withstand the test of high temperature, high pressure, acids, amines, H2S, C2/C4 hydrocarbons, and other hydrocarbon gases. HNBR o-rings can resist acids, oil, and solvents and also have good heat resistance, high-pressure resistance, and oxidation resistance.
HNBR rubber can be made into o-rings, gaskets, shock absorbers, and seals which can be used in the petroleum industry and the automotive industry. HNBR rubber material offers good heat and aging resistance, and is suitable for various sealing applications in industrial systems, including hydraulic pipes, hydraulic sealing rings, cable protection, sleeves, and seals.
