To provide our customers with added value, A/S Gunnar Haagensen now offers full NORSOK M-710 Rev. 2 certified HNBR rubber solutions

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NORSOK M-710 standard for elastomeric materials The NORSOK standards are developed by the Norwegian Petro-leum Industry to ensure adequate safety and cost effectiveness for developments within the petroleum industry. The NORSOK M-710 standard specifies the requirements for elastomeric seal-ing materials to be used in critical applications within the Oil & Gas sector. These requirements state the necessary documenta-tion for material properties in order to achieve full compound certification, and are listed in the M-710 table 2 - “Required documentation of elastomeric material properties”.

In addition to overall physical properties, the M-710 provides the essential acceptable criteria for both rapid gas decompres-sion (RGD) as well as sour gas ageing (H2S). These particular conditions offer an insight into long time behavior and overall life expectancy for the elastomers in question.

To provide our customers with added value, A/S Gunnar Haa-gensen now offers full NORSOK M-710 Rev. 2 certified HNBR rubber solutions. Material testing has been performed and ap-proved by UK independent research laboratory MERL, Ltd., (Materials Engineering Research Laboratory).

Highly Saturated Nitrile (HNBR)The NORSOK M-710 certified HNBR compound offered by A/S Gunnar Haagensen is a high performance elastomer for use in critical applications. High tensile strength coupled with good heat and chemical resistance, makes this compound an excellent solution for Oil & Gas related sealing solutions. HNBR articles are offered both in a broad range of standard and custom O-rings as well as application-specific moulded parts.

Features and benefits

• High tensile properties• Low compression set• Good low temperature properties • Excellent heat resistance• Good resistance to aggressive and crude oils • Good chemical compatibility• Long life in aggressive media

NORSOK M-710 HNBR HNBR in accordance with NORSOK M-710 Rev. 2

© A/S Gunnar Haagensen

Properties StandardSpecific gravity ASTM D297 Hardness (Shore A/IRHD) ASTM D2240Tensile and elongation ASTM D412CCompression set ASTM D395Low temperature characteristics DMATear resistance ASTM D624 ATemperature of retraction ISO 2921Ageing/RGD characteristics M-710 Annex A/B

NORSOK M-710 - Table 2

Documentation for M-710 When supplying NORSOK M-710 approved articles and items, A/S Gunnar Haagensen comply with the required level of docu-mentation. All NORSOK items are supplied with the statutory documentation stated in the M-710 standard. This ensures that our customers are in possession of all required information.

• Technical data sheetAll articles are delivered with a technical data sheet on the employed compound. This data sheet contain compound description and summery of physical properties in accord-ance with NORSOK M-710 Rev. 2, Table 2 - Required documentation of elastomeric material properties.

• RGD and sour ageing test certificateIn addition to overall technical data sheet, all items are sup-plied with test certificates for performed RGD and sour age-ing tests. Material testing has been performed by MERL, Ltd., (Materials Engineering Research Laboratory).

• Measurement reportAll articles are delivered with a measurement report for inspection and confirmation of specified dimensions. Con-trol certificate is prepared in accordance with UNI EN 10204:2005 - 3.1.

• Traceability and GMPTo ensure a high quality assurance, as well as to establish a traceable methodology, all NORSOK articles are han-dled via our quality control system in accordance with ISO 9001:2008. All items are supplied with full traceability by batch numbering.

A/S Gunnar Haagensen • Hejrevang 6 • DK-3450 Allerød • Tel.: +45 4817 6500 • Mail: Gunnar@haagensen-as.dk • www.haagensen-as.dk

Elastomer NORSOK M-710 Acceptance CriteriaTensile Visual Volume

HNBR Pass Pass Pass

Elastomer NORSOK M-710 Acceptance Criteria10 Cycles Pass/Fail

HNBR 3311 Pass

Volume % Composition90 CO2 (Carbon Dioxide)10 CH4 (Methane)

Pressure 150 bar (reduced 20 bar/minute)

Temperature 100 ºC

Volume % Composition30 2% H2S , 3% CO2 , 95% CH4

10 Distilled water (conductivity < 5 ɥS)60 70% C7H16 , 20% C6H12 ,10% toluene

Pressure 100 bar

Temperature Test Duration (Days)160 ºC 7, 14, 28, 49170 ºC 6, 12, 24, 42180 ºC 5, 10, 20, 35

Approved to Sour Ageing Requirements

Approved To RGD Requirements

RGD Acceptance Criteria

1. Subject O-ring to RGD and examine four cut cross section for cracks.

2. Rate O-ring cracks according to M-710 Rev. 2, Table B.2 in Annex B. Ratings of 4 and 5 are unacceptable.

3. List ratings of each O-ring by listing individual cross section ratings in order of highest to lowest.

Sour Ageing Acceptance Criteria

1. Hardness: +10/-20 units2. S$3. d

Sour Ageing (H2S) Sour Ageing Test Conditions

Rapid Gas Decompression (RGD)

RGD Test Conditions

Hardness +10/-20 unitsSwelling +25/-5%

Tensile strength +/- 50%Elongation +/- 50%

Modulus (50%) +/- 50%Visual Inspection No tendency toward dissolution,

cracking, blistering or physical deformation.

Standard under developmentThe NORSOK M-710 standard is under continued development. As such the current Rev. 2 from October 2001 will be replaced by a Rev. 3 in the near future. New requirements for materi-al properties and test conditions can therefore be introduced. Contact us in case of questions regarding NORSOK M-710 ap-proved gaskets and sealing solutions.