Elastomer Technology

Rapid gas decompression - Vermilion and legacy materials

Rapid gas decompression

variety of industry standards and test methods exist for evaluating rapid gas decompression resistance in a way that allows compound performance to be compared.

Regardless of the test used, James Walker maintains a position that only materials capable of sustaining no damage under industry standard RGD testing will provide optimum operational safety in critical applications.

NORSOK M-710 Annex B Rev. 2/3
Media: 90% CH4, 10% H2S
Temperature: 100°C (212°F)
Pressure: 150 bar/15 MPa (2176 psi)
Decompression rate: 40 bar/min
Number of cycles: 10/8

ISO 23936-2
Media: 90% CH4, 10% H2S
Temperature: 100°C (212°F)
Pressure: 150 bar/15 MPa (2176 psi)
Number of cycles: 8

Total GS EP PVV 154 and PVV 155
Media: 80% CH4, 20% H2S
Temperature: 75°C (167°F)
Pressure: 190 bar/19 MPa (2756 psi)
Decompression rate: 127 bar/min
Number of cycles: 5

Both media and temperature have a major influence on RGD performance and because of this, testing beyond standard industry approvals is required to assess full capability for resistance to RGD in operational conditions.

James Walker operates one of the most comprehensive facilities for RGD testing and regularly undertakes testing for customers to validate seal performance in application specific conditions.


Vermillion One
Vermillion One
Ultra low temperature

Capability confirmed down to -60°C (-76°F) in product configured testing.

Vermilion One is a fluoroelastomer (FKM) with ultra-low temperature capability and excellent methanol resistance.

Providing excellent H2S resistance and typical FKM tolerance of aromatics and hot water, this material also offers good resistance to rapid gas decompression (RGD).

Approvals:

  • Norsok M-710 Annex A ISO 23936-2 ‘sour’
  • Norsok M-710 Annex B ISO 23936-2 
  • API 6A FF/HH  ISO 10423 ‘sour’
  • Total GS EP PVV 154/156

ArrowView our data sheet


Vermillion TwoVermillion Two
Methanol resistance

Capability confirmed down to -46°C (-51°F) in product configured testing.

Vermilion Two is a fluoroelastomer (FKM) with excellent resistance to methanol, H2S and rapid gas decompression (RGD), providing good low temperature performance and the typical FKM tolerance of aromatics and hot water plus inherent extrusion resistance.

Approvals:

  • Norsok M-710 Annex A ISO 23936-2 ‘sour’
  • Norsok M-710 Annex B ISO 23936-2 
  • API 6A FF/HH  ISO 10423 ‘sour’
  • Total GS EP PVV 154/156

ArrowView our data sheet


Vermillion ThreeVermillion Three
RGD at high temperatures

Capability confirmed down to -46°C (-51°F) in product configured testing.

Vermilion Three is a next generation enhanced performance development of James Walker’s industry leading FR 25/90 material.

A fluoroelastomer (FKM) offering excellent temperature performance, resistance to H2S and rapid gas decompression (RGD) plus the typical FKM tolerance of aromatics and hot water.

The first and only elastomer Shell TAT approved to Shell MESC SPE 85/301.

Approvals:

  • Norsok M-710 Annex A ISO 23936-2 ‘sour’
  • Norsok M-710 Annex B ISO 23936-2 
  • API 6A FF/HH  ISO 10423 ‘sour’
  • Total GS EP PVV 154/156
  • NACE TMO187
  • Shell MESC 85/301

ArrowView our data sheet


FR 25/90FR 25/90
RGD performance

Capability confirmed down to -46°C (-51°F) in product configured testing.

FR 25/90 is an excellent cost-effective general purpose fluoroelastomer (FKM) providing outstanding resistance to rapid gas decompression in addition to the resistance to H2S, aromatics and hot water typical of an FKM.

This low temperature material has now been superseded by Vermilion Three which provides enhanced RGD resistance at elevated temperatures.

Approvals:

  • Norsok M-710 Annex A
  • Norsok M-710 Annex B
  • Total GS EP PVV 154/156
  • NACE TMO187

ArrowView our data sheet


Vermillion FourVermilion Four
RGD and sour

Capability confirmed down to -33°C (-27°F) in product configured testing.

Vermilion Four is a next generation development of James Walker’s industry leading FR 58/90 material with significant performance enhancement.

An excellent cost-effective general purpose fluoroelastomer (FKM) providing outstanding resistance to rapid gas decompression (RGD) at larger cross sections and higher temperatures, this material also provides excellent resistance to H2S plus the tolerance to aromatics and hot water typical of a peroxide cured FKM.

Approvals:

  • Norsok M-710 Annex A ISO 23936-2 ‘sour’
  • Norsok M-710 Annex B ISO 23936-2 
  • API 6A FF/HH  ISO 10423 ‘sour’
  • Total GS EP PVV 154/156

ArrowView our data sheet


FR 58/90FR 58/90
RGD performance

Capability confirmed down to -33°C (-27°F) in product configured testing.

FR 58/90 is a good cost-effective general purpose fluoroelastomer (FKM) providing excellent resistance to rapid gas decompression (RGD) at larger cross sections and higher temperatures, this material also provides the resistance to H2S and aromatics typical of an FKM.

The benchmark FKM for over 30 years, this material has now been superseded by the outstanding
performance
of our next generation Vermilion Four material.

Approvals:

  • Norsok M-710 Annex A
  • Norsok M-710 Annex B
  • Total GS EP PVV 154/156
  • API 6A FF/HH  ISO 10423 ‘sour’

ArrowView our data sheet


Vermillion FiveVermilion Five
Low temperature

Capability confirmed down to -55°C (-67°F) in product configured testing.

Vermilion Five is a next generation enhanced performance development of James Walker’s industry leading Elast-O-Lion 985 material.

This hydrogenated nitrile (HNBR) material offers excellent low temperature performance combined with good resistance to rapid gas decompression (RGD) and sour conditions.

Approvals:

  • Norsok M-710 Annex A ISO 23936-2 ‘sour’
  • Norsok M-710 Annex B ISO 23936-2 
  • API 6A FF/HH  ISO 10423 ‘sour’

ArrowView our data sheet


Elast-O-Lion 985Elast-O-Lion 985
Low temperature

Capability confirmed down to -55°C (-67°F) in product configured testing.

Elast-O-Lion 985 is a general purpose hydrogenated nitrile (HNBR) with superior mechanical properties, excellent low temperature capability and outstanding abrasion resistance.

This grade has now been superseded by our Vermilion Five material which offers the same market leading low temperature capability combined with enhanced resistance to RGD.

Approvals:

  • Total GS EP PVV 154/156
  • API 6A FF/HH  ISO 10423 ‘sour’
  • Norsok M-710 Annex A

ArrowView our data sheet


Vermillion SixVermilion Six
Chemical and RGD

Capability confirmed down to -15°C (+5°F) in product configured testing.

Vermilion Six is a next generation enhanced performance development of James Walker’s AF 69/90 material.

With typical characteristics of outstanding heat, amine, acid, H2S and hot water resistance, this Aflas material also provides good levels of resistance to rapid gas decompression (RGD).

Approvals:

  • Norsok M-710 Annex A ISO 23936-2 ‘sour’
  • Norsok M-710 Annex B ISO 23936-2 

ArrowView our data sheet


AF 69/90AF 69/90
Chemical resistance


Capability confirmed down -15°C (+5°F) in product configured testing.

AF 69/90 is a robust Aflas based synthetic rubber with excellent resistance to steam, amines, bases, methanol and hydrogen sulphide plus oils and lubricants.

AF 69/90 is a first generation material regarded as a benchmark material of its type for many critical oil and gas applications.

Approvals:

  • Norsok M-710 Annex A

ArrowView our data sheet


Vermillion SevenVermilion Seven
RGD, sour and extrusion resistance

Capability confirmed down to -33°C (-27°F) in product configured testing.

Vermilion Seven is a next generation enhanced performance development of James Walker’s industry leading Elast-O-Lion 101 material.

An hydrogenated nitrile (HNBR) material offering excellent rapid gas decompression (RGD) resistance at elevated temperature and good resistance to sour conditions combined with outstanding physical robustness and improved extrusion resistance.

Approvals:

  • Norsok M-710 Annex A ISO 23936-2 ‘sour’
  • Norsok M-710 Annex B ISO 23936-2 
  • API 6A FF/HH  ISO 10423 ‘sour’

ArrowView our data sheet


Elast-O-Lion 101Elast-O-Lion 101
Chemical and sour resistance

Capability confirmed down to -33°C (-27°F) in product configured testing.

An excellent cost-effective general purpose hydrogenated nitrile material (HNBR) providing excellent resistance to rapid gas decompression and abrasion.

Elast-O-Lion 101 is a first generation material developed over 35 years ago and still regarded as a benchmark material for many critical oil and gas applications.

Approvals:

  • Norsok M-710 Annex A
  • Norsok M-710 Annex B
  • Total GS EP PVV 154/156

ArrowView our data sheet


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