Products
Kaflon (Xiamen) Seal Co.,Ltd
Tel: +86-592-5171076
Fax: +86-592-5166562
Phone: +8615880206572
Email: contact@kaflon-seal.com
Add: No.75 Tian'an Road, Jimei District, Xiamen City, Fujian, China
U Spring Series
Reliable Sealing Performance for Extreme and Critical Applications
KAFLON U Series Spring Energized Seals are high-performance sealing solutions designed for demanding applications where conventional elastomer seals fail.
U-Shaped Metal Spring Energizer
Provides continuous and uniform radial sealing force
Compensates for wear, thermal expansion, and pressure variations
Optional materials: Stainless Steel, Elgiloy
PTFE or Filled PTFE Sealing Jacket
Ultra-low friction coefficient
Excellent chemical compatibility
Outstanding wear resistance
Optional filled grades:
Glass-filled PTFE
Carbon-filled PTFE
Graphite / MoS₂ filled PTFE
Oil & Gas
Valves and actuators
Downhole tools
High-pressure sealing systems
Hydraulics
Hydraulic systems
Control valves
Precision mechanical assemblies
Chemical & Process Industry
Pumps and compressors
Reactors and mixers
Corrosive media sealing
Vacuum Systems
Ultra-high vacuum chambers
Gas delivery systems
Cleanroom equipment
Advantages of U Series Spring Energized SealsU Series spring energized seals deliver stable sealing performance, low friction, excellent chemical resistance, and long service life, making them ideal for static, reciprocating, and slow rotary applications.
Constant Sealing Force
The U-shaped spring maintains reliable sealing contact regardless of pressure changes or seal wear.
Wide Operating Temperature Range
Suitable for extreme environments, from cryogenic temperatures to high-temperature applications (depending on material selection).
Excellent Chemical Resistance
PTFE-based materials provide near-universal chemical compatibility.
Low Friction & Minimal Stick-Slip
Ideal for precision equipment, slow speeds, and sensitive motion control systems.
Long Service Life
Reduced wear and stable performance significantly lower maintenance and downtime costs.
Customizable Design
Available in custom sizes, materials, spring forces, and profiles to match specific application requirements.
Q1: What is the difference between U Series spring energized seals and O-rings?
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A: U Series seals rely on a metal spring for energizing force, not material elasticity. This allows them to perform reliably under extreme temperatures, low pressure, vacuum, and aggressive chemicals where O-rings fail.
Q2: Can U Series seals be used for dynamic applications?
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A: Yes. They are suitable for static, reciprocating, and slow rotary motions. Proper material and spring selection ensures optimal performance.
Q3: What materials are available?
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A: Standard options include virgin PTFE and filled PTFE grades, combined with stainless steel or high-alloy springs. Custom material combinations are available upon request.
Q4: Are custom sizes supported?
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A: Absolutely. KAFLON specializes in custom-engineered spring energized seals based on drawings or application conditions.
Q5: What information is required for seal selection?
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A: Operating pressure, temperature range, media, motion type, groove dimensions, and sealing direction help us recommend the best solution.
One-stop Solution
Advanced PTFE material formulations
One-stop Solution
Precision machining and strict quality control
One-stop Solution
OEM & custom engineering support
One-stop Solution
Proven performance in critical applications worldwide
