HPT Stack Overview
Description: The HPT Stack is a high-performance, three-piece HPHT (High Pressure High Temperature) seal designed for use as a double-acting piston or rod seal. This innovative seal stack is commonly utilized as a replacement for traditional multi-vee seal stacks, such as the ATR or VTR sealing stacks. The HPT Stack delivers superior sealing performance and offers excellent adaptability to various temperatures and media through the selection of suitable materials. It is capable of withstanding pressures of up to 15,000 psi at 400°F (204°C) with passing ports at shifting pressures of 1,500 psi.
Applications: The primary application for the HPT Stack is in sliding sleeves. However, it is versatile enough to be used in a range of other applications, including:
Features: The HPT Stack boasts several features that make it an excellent choice for demanding sealing applications:
In summary, the HPT Stack is a reliable, adaptable, and cost-effective sealing solution for high-pressure and high-temperature applications across a variety of industries.
| Specification | Details |
| Pressure Capacity | Maximum of 15,000 psi (104 MPa) |
| Operational Speed | Up to 2.3 feet per second (0.70 meters per second) |
| Temperature Range | -40°C to +232°C | -40°F to +450°F |
| Material | Description | Temperature Range |
| HNBR | HNBR (Hydrogenated Nitrile Butadiene Rubber) stands out as a premium sealing material, offering enhanced resistance to chemicals, oils, and temperatures, making it particularly suitable for harsh environmental conditions encountered in the oil and gas industry. Notably, HNBR showcases superior strength and retention of properties after long-term exposure to heat, oil, and chemicals, surpassing the performance of standard NBR. | -30°C to 150°C -22°F to 302°F |
| NBR | NBR (Nitrile Butadiene Rubber) is a highly valued sealing material due to its excellent resistance to oils, fuels, and other chemicals, making it an ideal choice for applications in the automotive and aerospace industries. With a temperature operating range, NBR provides versatility under varied environmental conditions. Very cost effective option. | -40°C to 120°C -40°F to 248°F |
| FKM | FKM (Fluoroelastomer) is highly regarded in the sealing industry for its exceptional resistance to high temperatures, chemicals, and aging, making it indispensable in aerospace, automotive, and chemical processing sectors. This material thrives across a wide temperature range, enabling its use in extreme conditions where other materials would fail. FKM’s remarkable compatibility with a wide variety of chemicals, including oil, fuel, and solvents, along with its ability to withstand harsh environmental factors, ensures its preference for high-performance seals, O-rings, and gaskets. Its robustness and longevity under aggressive conditions underscore FKM’s value as a premier choice for demanding sealing applications. | -20°C to 200°C -4°F to 392°F |
| TFE/P | Aflas, a fluoroelastomer developed by AGC Chemicals, is renowned for its outstanding performance in extreme environments, making it indispensable in various industries such as oil and gas, automotive, chemical processing, and food and pharmaceuticals. Composed of tetrafluoroethylene and propylene (TFE/P), Aflas excels with its exceptional heat resistance, tolerating continuous service temperatures up to 232°C (450°F), and demonstrates remarkable chemical resistance to strong acids, bases, oils, amines, and steam. Its durability is further enhanced by its resistance to oxidative and thermal degradation, ensuring longevity and reliability in aggressive conditions. Additionally, Aflas offers excellent electrical insulation properties, making it suitable for applications requiring high electrical resistivity. | -25°C to 232°C (-13°F to 450°F) |
| Material | Description | Temperature Range |
|---|---|---|
| Unfilled PEEK | Unfilled PEEK provides exceptional mechanical and chemical resistance properties at high temperatures. It is used in demanding applications such as bushings, bearings, wear pads, and seals. It has excellent abrasion resistance and maintains its properties over a wide temperature range. Common applications include aerospace, automotive, and chemical processing industries. | -70°C to 260°C (-94°F to 500°F) |
| Glass Filled PEEK | Glass Filled PEEK offers enhanced mechanical and thermal properties, making it suitable for applications requiring higher tensile and shear strength. It is commonly used in structural components, automotive, and aerospace applications due to its excellent resistance to harsh chemical environments. | -70°C to 260°C (-94°F to 500°F) |
| Teflon | Teflon (PTFE) is renowned for its outstanding chemical resistance, low friction, and high-temperature stability. It is widely used in applications like gaskets, seals, and bearings in the chemical processing, automotive, and aerospace industries. PTFE’s ability to maintain its properties at very low and very high temperatures makes it a versatile material for various industrial applications. | -200°C to 260°C (-328°F to 500°F) |
For comprehensive support on housing details or to explore potential solutions tailored to your application, we invite you to book a meeting with us