Material: PTFE base filled with hollow glass microspheres
Density: 1.8 – 2.2 g/cm³
Tensile Strength: 15 – 25 MPa
Elongation at Break: 150% – 350%
Water Absorption: <0.01%
Dielectric Strength: 20 – 35 kV/mm
Contraction Percentage: 2% – 5%
Work Pressure: Up to 20 bar (≈300 psi), depending on thickness and density
Working Temperature: -190°C to +260°C (short-term up to 280°C)
Specification: As per your requirement
Trademark: Chunhuan
Origin: China
Transport Package: Standard Export Package
The glass microsphere-filled modified PTFE gasket is a high-performance sealing solution designed to overcome the common limitations of pure PTFE gaskets, such as cold flow and long-term sealing failure under sustained pressure. By incorporating specially treated hollow glass microspheres into the PTFE matrix, this gasket offers superior mechanical strength, improved compressive creep resistance, and excellent sealing stability. It combines the outstanding chemical inertness of PTFE with the rigidity and dimensional stability provided by the glass filler, making it ideal for medium and low-pressure flange applications in demanding industrial environments.
Excellent Anti-Creep Performance: The rigid structure of glass microspheres significantly enhances resistance to compressive creep (cold flow), ensuring consistent sealing stress over time.
High Mechanical Strength: Improved hardness and compressive strength reduce deformation under pressure, extending gasket life.
Outstanding Chemical Resistance: Inherits PTFE’s inertness, offering resistance to almost all acids, alkalis, solvents, and oxidizing agents.
Low Bolt Stress Requirement: Provides reliable sealing even with limited bolt torque or uneven flange surfaces.
Wide Temperature Range: Performs stably from cryogenic conditions to high-temperature processes.
Easy Installation: Soft yet durable material structure allows for smooth fitting and secure sealing.
Chemical and Petrochemical Industries: Ideal for flanges on pumps, valves, reactors, towers, and pipelines handling corrosive media such as acids, alkalis, and solvents.
Pharmaceutical and Bioprocessing: Suitable for clean piping systems, fermentation tanks, drying equipment, and purified water systems that meet GMP standards.
Food and Beverage Industry: Used for sealing filling equipment, mixers, and transport pipelines to maintain cleanliness and prevent contamination.
Electronics and Semiconductor Manufacturing: Ensures reliable sealing in high-purity chemical transport systems such as UPW and CMP lines.
General Industrial Use: Effective for medium to low-pressure flanges in corrosive or uneven surfaces, providing dependable long-term sealing.
The gasket is produced using advanced pre-mixing, molding, and precision sintering processes that ensure a uniform internal structure with no voids or defects. Each gasket maintains consistent performance and traceability. Available in standard and customized dimensions according to ASME B16.21, DIN, or user-specified requirements.
The material complies with FDA and RoHS standards, ensuring it is safe for use in food, pharmaceutical, and environmentally regulated applications.
The glass microsphere-filled modified PTFE gasket represents a significant advancement in PTFE sealing technology. By reinforcing PTFE with glass microspheres, it offers the perfect balance of flexibility, strength, and chemical resistance. Designed for industries where reliability, safety, and cleanliness are paramount, this gasket provides a durable and efficient sealing solution for a wide range of industrial processes.
