DQYYFP 6-Core & 4-Core 0.2 mm² Corrosion-Resistant Venting Cable with PTFE Tube for Harsh Environments

Stop Losing Money on Cables That Melt, Corrode, or Burst

You know the frustration. You install high-quality instrumentation cables in your plant or offshore rig. Everything works fine at first. But six months later, signals start dropping. The outer jacket cracks. Or worse, the cable bursts because pressure built up inside the tube.This happens in the real world. You deal with strong acids, hot steam, and oily chemicals every day. Standard PVC or rubber cables just cannot handle this heat and corrosion. They swell up, leak, or break down. When a cable fails in a refinery or a pharmaceutical plant, it is not just a repair cost. It is downtime. It is safety risks. It is lost production.You need a cable that breathes. You need a cable that laughs at chemicals. You need the DQYYFP 6-core and 4-core 0.2 mm² corrosion-resistant venting cable with a specialized PTFE venting tube. This is not just a wire. It is a complete protection system for your data and power lines in the harshest places on earth.

What Makes This Cable Different?

Most cables are sealed tight. They trap air and moisture inside. When the temperature changes, that trapped air expands. If the pressure gets too high, the cable splits open. Contaminants get in. Your system fails.Our DQYYFP cable solves this with a built-in PTFE venting tube. Think of it like a lung for your cable. It allows air to flow in and out. It equalizes pressure automatically. But it does something magical—it keeps water and oil out.We use PTFE (Polytetrafluoroethylene) for this. You might know it as Teflon. It is the “King of Plastics” for a reason. It has the slickest surface known to man. Liquids slide right off. Chemicals cannot stick to it. We wrap the insulation and the venting tube in this material to give you double protection.

Technical Specifications You Can Trust

We build this cable to military and industrial standards. It is not a generic product. It is engineered for specific, high-stakes jobs. Here is exactly what you get:

Core Configuration and Conductor Details

This cable is designed for precision signal transmission and control. We offer two main configurations in one robust design:

• 6-Core Option: Perfect for complex multi-variable transmitters. You get six separate paths for signals or control loops in one cable diameter.
• 4-Core Option: Ideal for power and simple data loops. It is lighter and easier to route in tight spaces.
• Conductor Size: 0.2 mm² (approx. AWG 24). This is the sweet spot. It is thin enough to be flexible but thick enough to carry signal current over long distances without voltage drop.
• Conductor Material: We use annealed bare copper or silver-plated copper. Silver plating is crucial if you need the highest conductivity and resistance to oxidation in humid air.
• Stranding: The wires are multi-stranded. This means they are not solid rods. They are made of many tiny wires twisted together. This makes the cable super flexible. You can bend it around corners without breaking the copper.

Insulation and Sheath Materials

The insulation is the barrier between the copper and the world.

• Material: 100% PTFE (Teflon). We do not use cheap copolymers. We use virgin PTFE resin.
• Process: The PTFE is wrapped and then sintered. This baking process makes the insulation tough and gap-free.
• Temperature Rating: This cable handles extreme heat. It works from -65°C up to 260°C. That is 500°F. Most buildings burn down before this cable melts. It also handles thermal shock—going from freezing to boiling instantly without cracking.
• Chemical Resistance: It resists strong acids, alkalis, oxidizers, and solvents. If you dip this in hydrochloric acid or acetone, it will not change.

The Venting Tube System

This is the star of the show. The “DQYYFP” designation implies a specific venting structure.

• Tube Material: PTFE. It matches the thermal expansion of the cable core so it does not crack when things get hot.
• Function: It manages differential pressure. When the cable heats up, air escapes through the vent. When it cools, air comes in.
• Hydrophobic and Oleophobic: The vent membrane repels water and oil. The Water Entry Pressure (WEP) is very high. Rain or wash-down water cannot penetrate the vent.
• Airflow Rate: We design the vent to allow a high level of airflow. This prevents “breathing” fatigue where moisture gets sucked in during cooling cycles. Your internal wires stay bone dry.

Shielding and Armor

Interference ruins data. We stop it before it starts.

• Shielding: We use braided copper or nickel-plated copper wire. The coverage is at least 65%, but we usually do 85-95% for critical instrumentation.
• Effectiveness: This stops EMI (Electromagnetic Interference) and RFI (Radio Frequency Interference). Your 4-20mA signals stay clean even next to heavy power lines or motors.
• Outer Jacket: Wrapped and sintered PTFE. No PVC here. The whole cable is non-flammable and self-extinguishing.

Voltage and Electrical Ratings

• Voltage Grade: 300V / 500V. This is standard for instrumentation and control circuits.
• Dielectric Strength: PTFE is an amazing insulator. It resists arcing and corona discharge, which is vital in high-altitude or aerospace applications.

Where Should You Use This Cable?

You should buy this cable if your environment is “arduous” or “harsh.” That is the technical term, but it means “nasty.”

Petrochemical and Oil & Gas

This is the home turf for PTFE.

• Refineries: Use it for sensors in distillation columns. The crude oil is hot and sour (contains sulfur). This cable eats sulfur for breakfast.
• Offshore Rigs: Salt water corrodes steel. The PTFE venting tube prevents salt from trapping inside the cable and corroding the copper from the inside out.
• Natural Gas Pipelines: Transporting gas with hydrogen sulfide (H2S). Standard cables get brittle and crack. This one stays flexible.

Aerospace and Defense

Weight and reliability matter most here.

• Aircraft: Used in wiring for engine controls and flight sensors. It is lightweight and does not burn. If there is a fire, PTFE does not release toxic smoke like PVC does.
• Military Vehicles: Exposed to jet fuel, hydraulic fluid, and extreme desert heat or arctic cold.

Pharmaceutical and Food Processing

• Clean Rooms: The cable is non-toxic and non-flammable. It does not outgas (release chemicals) in a vacuum or sterile environment.
• CIP/SIP Systems: Clean-in-Place and Steam-in-Place systems use hot caustic soda to clean pipes. This cable survives the washdown cycles every time.

Industrial Power and Glass/Steel

• Power Stations: Used near turbines where it is very hot.
• Glass and Cement Plants: High dust and high heat. The smooth PTFE surface does not collect dust, and the abrasion resistance handles rubbing against metal structures.

Why PTFE is the “King of Plastics” for Wires

You might ask, “Why not use PFA or FEP?” Those are good materials. But PTFE is better for the toughest jobs.

• Temperature: PTFE handles higher continuous temperatures (260°C) than PVC (75°C) or PE (75°C).
• Friction: It is self-lubricating. If you pull this cable through a long conduit, it slides easier. You save labor time during installation.
• Corrosion: It is chemically inert. It is the only material that resists elemental fluorine. It laughs at aqua regia.
• Weather: UV radiation destroys plastic over time. PTFE has excellent UV resistance. It can sit in the sun for years without becoming brittle.

The only downside is that PTFE is harder to process. It requires high pressure and high heat to extrude. But we have mastered this. Our sintering process ensures there are no pinholes in the insulation. A pinhole in a chemical environment is a disaster waiting to happen. We ensure zero pinholes.

Installation and Handling Tips

You do not need special tools to install this, but you should know a few things.

• Bending Radius: Because it has a venting tube and shielding, do not bend it at a sharp 90-degree angle right at the end. Give it a gentle curve. The minimum bend radius is about 10 times the cable diameter.
• Stripping: Use sharp tools to strip the PTFE jacket. It is tough. Do not nick the copper conductor.
• Sealing the End: When you cut the cable, you expose the venting tube. You must seal the end with a specific PTFE tape or potting compound to keep water out of the vent path.
• Vent Position: Install the venting section at the lowest point of the cable run if possible. This helps any accidental liquid drain away, though the hydrophobic membrane will stop it anyway.

Compare This to Standard Cables

Let’s look at the difference in real-world terms.

The upfront cost of our PTFE cable is higher. That is true. High-performance materials cost money. But the Total Cost of Ownership is much lower. You are not replacing it every year. You are not cleaning up chemical spills because a cable leaked. You are not shutting down the plant for repairs.

Frequently Asked Questions About This Product

Q: Can I use this for high-voltage power transmission?A: No. This cable is rated for 300V/500V instrumentation and control. It is not for high-voltage power grids. Use it for signals, data, and low-power control loops (like 4-20mA).Q: How does the venting tube work with the shielding?A: Great question. The venting tube is usually inside the outer braid or jacket, or integrated into the bedding. It is designed so that the braid does not block the vent. We use a specialized construction where the vent channel is protected but open to the atmosphere at the termination points.Q: Is this cable compliant with military specs?A: Yes. We manufacture to standards like JSS 51034, MIL 16878, and IS 8130. If you need a specific MIL-spec certification for a defense contract, we can provide the paperwork.Q: What colors does it come in?A: Standard is white or grey (for easy identification in industrial settings). We can do custom colors like red, blue, or black for specific phase or signal identification, but standard colors are best for chemical resistance as pigments can sometimes affect material properties.Q: Can you supply cut-to-length pieces with connectors?A: Absolutely. We can supply bulk drums or cut lengths with M12, M8, or military-style connectors already molded on. We can also add potting for waterproof terminations.

Get a Quote for Your Project Today

You are dealing with tough conditions. You need a cable that is as tough as your team. The DQYYFP 6-core and 4-core 0.2 mm² corrosion-resistant venting cable with PTFE tube is the solution engineers choose when they cannot afford to fail.We are a factory-direct supplier. We do not just resell. We manufacture the PTFE resin into the final cable. We control the quality from the raw material to the spool.Do you have a special requirement? Maybe you need a different core count? Maybe you need a specific jacket color for safety coding? Maybe you need 10,000 meters for a new refinery project?Tell us what you need. Send us your drawing or your spec sheet. We will review it for free. We will check if this DQYYFP model is the best fit, or if you need a variation like PFA lined or double-shielded.Don’t wait for your next cable failure. Prevent it now.Click the “Inquire Now” button or email us with your detailed requirements. We will send you a competitive quote within 24 hours. Let’s build a system that lasts.