Material: 100% Virgin PTFE
Density: 2.1–2.3 g/cm³
Working Temperature: -200°C to +260°C
Tensile Strength: ≥15.0 MPa
Elongation at Break: ≥150%
Dielectric Strength: 10 kV/mm
Water Absorption: <0.01%
Contraction Percentage: <0.4%
Work Pressure: Suitable for low to medium pressure (depending on design)
Trademark: Chunhuan
Origin: China
Transport Package: Standard Export Package
The Round Head Screw produced by Chunhuan is a high-performance fastening component designed for environments where corrosion resistance, chemical stability, and material purity are critical. Made entirely from 100% virgin PTFE (Polytetrafluoroethylene), this screw provides exceptional durability and reliability under extreme working conditions. Unlike metal fasteners, PTFE screws do not rust, react, or contaminate sensitive media, making them ideal for industries such as chemical processing, semiconductor fabrication, food production, and pharmaceuticals.
The screw is manufactured from virgin PTFE with no additives, fillers, or recycled materials. This ensures absolute material purity and chemical inertness, preventing any potential contamination of the process environment. The non-adhesive, ultra-smooth surface minimizes particle buildup, ensuring stable performance even in ultra-clean or sterile systems. The result is a fastening component that maintains dimensional accuracy, cleanliness, and reliability throughout its service life.
One of PTFE’s greatest strengths is its unmatched resistance to chemical attack. The round head screw is virtually immune to corrosion from strong acids, bases, solvents, oxidizers, and most industrial chemicals. This makes it a perfect substitute for stainless steel or coated metal screws that may fail or degrade under harsh conditions. In chemical reactors, electroplating systems, or laboratory setups, the PTFE screw remains completely stable and reliable, even when continuously exposed to aggressive substances.
The operating temperature range of -200°C to +260°C enables this screw to perform consistently in both cryogenic and high-temperature environments. Whether installed in a cold chemical storage line or a heated process chamber, it retains excellent mechanical properties, dimensional stability, and sealing performance. This versatility allows it to function in industries where other materials would quickly deform, crack, or corrode.
The PTFE round head screw also delivers excellent electrical insulation, with a dielectric strength of approximately 10 kV/mm. This makes it an ideal choice for use in electrical and electronic equipment, especially in high-voltage or moisture-sensitive environments. Mechanically, it offers a tensile strength of ≥15.0 MPa and elongation at break of ≥150%, providing the flexibility and resilience needed for reliable fastening under various pressures.
Extreme Chemical Inertness: Resistant to nearly all known industrial chemicals and solvents, ensuring long-term stability in corrosive environments.
High-Purity Construction: Made from 100% virgin PTFE, introducing no contaminants to sensitive processes.
Non-Stick, Low-Friction Surface: Reduces the risk of seizing, galling, or residue buildup, even without lubrication.
Excellent Insulation: Safe for use in high-voltage or static-sensitive applications.
Wide Temperature Range: Maintains strength and dimensional accuracy from -200°C to +260°C.
Long Service Life: Resistant to UV light, aging, and weathering, significantly reducing maintenance and replacement costs.
Chemical and Electroplating Industry: Used for securing reactors, valves, pumps, and pipe systems that operate in acidic or alkaline environments.
Semiconductor and Electronics Manufacturing: Prevents metal ion contamination in wafer cleaning, CMP, and etching processes.
Pharmaceutical and Food Processing: Ensures hygienic, contamination-free connections for equipment in sterile or cleanroom conditions.
Medical and Biotech Equipment: Provides chemical and biological stability for laboratory and diagnostic systems.
Aerospace and Research Applications: Offers a lightweight and temperature-resistant solution for fastening in advanced testing systems.
The Round Head Screw by Chunhuan sets the standard for high-performance PTFE fasteners. With its combination of exceptional purity, chemical inertness, temperature resistance, and electrical insulation, it offers a long-lasting solution for environments where traditional metal screws simply cannot perform. Whether you need a fastening component for corrosive chemical systems, ultra-clean semiconductor facilities, or precision medical devices, Chunhuan’s PTFE round head screw provides a safe, stable, and maintenance-free solution that meets the highest industrial demands.
