Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
PVA000080 High Wear BT40-VS Spring Energized Seal for Chemical Pump & LNG Equipment
- Category：Spring Energized Seal / PTFE Seal / Industrial Sealing Component
- Temperature: -200℃ ～ +280℃
- Material: Seal Jacket: PTFE filled with 20% carbon fiber (BT40) ; Built-in Energizer: 316 Stainless Steel
- Color: Dark Gray / Black
- Hardness: Shore D 55-65 (PTFE jacket); 316 Stainless Steel Spring: HRC 40-45
- Product description:
BT40-VS is a high-performance spring energized seal , mainly composed of a carbon fiber-filled PTFE jacket and a V-shaped cantilever metal spring. It is designed for extreme industrial working conditions, with excellent performance in high/low temperature resistance, corrosion resistance, and pressure resistance.
5.0
design customization
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1. Model Interpretation
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BT40: Material of the seal jacket → PTFE filled with 20% carbon fiber
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VS: Built-in V-shaped cantilever energizing spring, featuring one-way preload and excellent low-pressure sealing performance
2. Material Composition
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Seal Jacket: BT40 Carbon Fiber-Filled PTFE
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Composition: PTFE + Carbon Fiber Reinforcement
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Color: Dark Gray / Black
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Temperature Range: -40℃ ～ +260℃
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Characteristics: Self-lubricating, low friction, high wear resistance, creep resistance, good dimensional stability, excellent heat conduction and heat dissipation, and resistance to most acids, alkalis, and organic solvents.
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Built-in Spring: VS V-Shaped Cantilever Spring
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Standard Material: 316 Stainless Steel
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Optional Materials: Inconel (for high-temperature applications), Hastelloy (for strong corrosive environments)
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Structural Features: Uniform preload, reliable low-pressure and vacuum sealing, automatic wear compensation, and adaptation to small and medium gap eccentricity.
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3. Core Product Advantages
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Wide temperature range, resistant to high and low temperatures, and its chemical corrosion resistance is far superior to that of rubber seals.
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The spring provides continuous energization, automatically compensating for wear, shaft eccentricity, and assembly gaps.
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No leakage under low pressure/vacuum, and self-tightening and pressure-boosting sealing under high pressure.
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Low friction and self-lubrication, suitable for high-speed, low-speed, and dry friction working conditions.
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No aging, no swelling, can be stored for a long time, and its service life is 5～10 times that of ordinary O-rings.
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Suitable for multiple scenarios such as reciprocating, rotary, and end face static sealing.
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Hydraulics & Pneumatics: Hydraulic cylinders, air cylinders, construction machinery, injection molding machines
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Fluid Valves & Pumps: Chemical pumps, control valves, high-pressure valves
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Energy & Low Temperature: LNG low-temperature equipment, oil and gas wellhead equipment
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Semiconductor/Medical: High-purity media, sterile and non-precipitation working conditions
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General Machinery: Rotary joints, rotating shafts, flange end face static sealing
5. Selection Adaptation and Prohibited Scenarios
Suitable for Selection
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High/low temperature, corrosive media, and vacuum sealing applications
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Requirements for dry friction, low friction, and no crawling
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Medium and high-pressure reciprocating shafts, rotating shafts, and valve static sealing
Not Recommended for Selection
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Strong corrosive media such as molten alkali metals and pure fluorine gas
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Ultra-high speed rotary working conditions
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Extreme low-temperature conditions < -200℃
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