The HPHT sealing stack that is reliable, easy to install, and easy on the bottom line.
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The HPHT sealing stack that is reliable, easy to install, and easy on the bottom line.
The HPT Stack is a three-piece, HPHT, doubling acting piston or rod seal. Commonly used as a multi-vee seal stack replacement, such as the ATR or VTR sealing stacks. The HPT stack offers superior sealing performance and has good adaptation possibilities for diverse temperatures and media by the selection of suitable materials. The seal stack can hold 15,000 psi at 400°F (204°C) with passing ports at shifting pressures of 1,500 psi.
• Significant reduction in cost when compared with VTR/ATR, as well as other multi-component sealing Stacks
• 3-piece design with split guiding elements enables easy installation.
• Allows for reduced groove width
• Proven to operate at 15,000 psi at 392°F (200°C)
• Large element “lead-in” reduces the risk of damage while traversing ports.
• Pre-load can be modified to suit customer requirements.
Temperature Range: -40°C to 232°C (-38.2°F to 450°F)
Max Pressure: 20000 PSI
Max Surface Speed: 2.3 fps (0.7m/s)
All parts are measured on our Zeiss O-Machine and or Keyence CMM, which utilize optical and contact measurement technology in a comprehensive analysis. The O-Machine includes multi-sensor coordinate measuring, white light sensors for non-contact assessments and extremely accurate 3D scanners.
We follow AQL 2.5 levels 1 and 2 sample size quantities, and all molded parts are manufactured to RMA A2 tolerances.
Our rubber and plastic materials supply is diversified amongst the top compounders in North America. Each polymer has been qualified to meet typical exploration and production well conditions, including mechanical, tribological, thermal, and specific immersive properties.
| Material Code | Description | Tensile Strength | Elongation | Compression Set | 100% Modulus | Data Sheet |
| H#DS | General-purpose Hydrogenated Nitrile (HNBR) compound with improved methanol and sour gas resistance over Nitrile. | See Data Sheet | See Data Sheet | See Data Sheet | See Data Sheet |  |
| F#DS | General-purpose FKM (Viton®) compound. Suitable for higher temp applications and offers excellent chemical resistance. | See Data Sheet | See Data Sheet | See Data Sheet | See Data Sheet | |
| MCM90 | Improved extrusion and wear resistance over standard HNBR. | 4100 psi | 180% | < 15% | 1425 psi | |
| EE3268 | RGD, amine, H2S, and steam resistant Aflas | 3028 psi | 154% | 16.13% | 2169 psi | |
| Material Code | Description | Heat Deflection | Tensile Strength | Tensile Elongation | Compressive Strength | Data Sheet |
| PEEK | Victrex 450G PEEK. Good toughness and impact performance, with high elongation properties. Certified to ISO 23936/NORSOK M-710 for high sour fluid ageing. | 305F | 14300 psi | 45.0% | 18100 psi | |
| GPEEK | Victrex 450GL30 PEEK. Same features as virgin PEEK, but with higher tensile strength, as well as increased shear strength. Certified to ISO 23936/NORSOK M-710 for high sour fluid ageing. | 620F | 26000 psi | 2.7% | 37000 psi | |
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