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Premium PTFE Sealing Solutions Manufacturer

Hangzhou North Star Seal Co., Limited – ISO-certified producer of high-performance PTFE Thread Seal Tape, Thread Seal Cord, Pipe Sealants, and industrial sealing materials since 2014.

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About North Star Seal

Hangzhou North Star Seal Co., Limited was established on January 1st, 2014, and is located in Hangzhou Linan City — a recognized fluorine plastic products manufacturing base in China. We specialize in the production of PTFE Thread Seal Tape and a wide range of industrial sealing materials.

Our mission is to deliver reliable, high-performance sealing solutions to global markets, including Russia, Canada, Dubai, and beyond. With strict quality control and advanced manufacturing processes, we ensure every product meets international standards such as MIL-SPEC T27730A and EN751-2.

2014
Founded
100+
Products
Global
Export
ISO
Certified
Factory Workshop Production Line PTFE Tape Gaflon Tape

Our Products

PTFE Thread Seal Tape

PTFE Thread Seal Tape

19mm x 0.2mm x 15m | 100% Virgin PTFE | High Density

  • • Thickness: 0.075–0.2mm
  • • Width: 3–100mm
  • • Length: 5–50m
  • • Pressure: 150–200kg/cm²
Gaflon Tape

Gaflon Tape

12mm x 0.075mm x 10m | DUKE Brand | Dubai Market

  • • Density: 0.3g/cm³
  • • Virgin PTFE
  • • For metal & plastic pipes
  • • Diameter < 6”
PTFE Liquid Sealant

PTFE Liquid Sealant

250ml | Gas Pump Use | Thread Sealing Compound

  • • One-component formula
  • • High pressure resistance
  • • Fast curing
  • • For gas & water lines
PTFE Thread Seal Tape 12mm

PTFE Thread Seal Tape

12mm x 0.075mm x 10m | Density: 0.3g/cm³

  • • MIL-SPEC T27730A compliant
  • • Water & gas use
  • • Virgin PTFE
  • • 50mm OD color box
Thread Seal Cord

Thread Seal Cord

160m | PTFE String | EN751-2 Compliant

  • • Multi-usage for metal/plastic
  • • Diameter < 6”
  • • Fast & easy installation
  • • Reusable adjustment
HANJEWL Canada Tape

HANJEWL Canada Tape

12mm x 0.075mm x 8m | Density: 0.25g/cm³

  • • Exported to Canada
  • • Virgin PTFE
  • • High tensile strength
  • • Leak-proof sealing
PTFE Hose

PTFE Corrugated Hose

Flexible | High Temp | Chemical Resistant

  • • Extruded PTFE
  • • For steam & industrial use
  • • Reinforced options
  • • Custom lengths
PVC Glue

PVC Glue – Blue

Solvent-Based | UPVC Pipe Bonding

  • • One-component adhesive
  • • For rigid PVC & UPVC
  • • Fast bonding
  • • Waterproof joint
PTFE Rod

Virgin PTFE Rod

Diameter: 5–300mm | Pure PTFE

  • • Skived or molded
  • • High purity
  • • Machinable
  • • Chemical inert
PTFE Sheet

PTFE Skived Sheet

Red or Carbon-Filled | 0.1–5mm Thickness

  • • 100% pure PTFE
  • • For gaskets & seals
  • • High temp resistance
  • • Custom cutting
PTFE Braided Packing

Pure PTFE Packing

Braided Seal | High Pressure

  • • For pumps & valves
  • • Low friction
  • • Non-abrasive
  • • Long service life
Self-Fusing Rubber Tape

High Voltage Self-Fusing Tape

Model: 10#, 20#, 30# | Insulation

  • • Self-amalgamating
  • • For electrical splicing
  • • Waterproof
  • • UV resistant

Why Choose North Star Seal?

🔬

Strict Quality Control

Every product undergoes rigorous testing with precision tools to ensure compliance with international standards like MIL-SPEC and EN751-2.

🌍

Global Export

Trusted by customers in Canada, Russia, Dubai, and across Asia. We support OEM branding and custom packaging for international markets.

🏭

Advanced Manufacturing

Our facility includes stretching, slitting, and rewinding workshops equipped with PTFE tape machines for consistent, high-volume production.

✅

100% Virgin PTFE

We use only pure, virgin PTFE material—no recycled content—to ensure maximum chemical resistance, durability, and sealing performance.

📦

Custom Packaging

Offering branded boxes (HANJEWL, Gaflon, DUKE), color coding, and private labeling for distributors and resellers.

📞

Direct Factory Pricing

As the manufacturer, we offer competitive pricing with MOQ flexibility and fast lead times for bulk orders.

10+
Years in Business
115+
PTFE Tape Variants
16
Thread Seal Cord Types
50+
Countries Served

Frequently Asked Questions

What is PTFE Thread Seal Tape used for?

It is used to seal threaded pipe connections in plumbing, gas lines, and industrial systems to prevent leaks. It provides a tight, chemical-resistant seal.

Is your PTFE tape made from virgin material?

Yes, all our PTFE tapes and cords are made from 100% virgin PTFE to ensure high purity, strength, and performance.

Can I get custom lengths or widths?

Yes, we offer customization in width (3–100mm), thickness (0.075–0.2mm), and length (5–160m) based on your requirements.

Do you offer private labeling?

Yes, we support OEM branding for HANJEWL, Gaflon, DUKE, and custom brand packaging for distributors.

What certifications do you have?

Our products comply with MIL-SPEC T27730A, EN751-2, and are manufactured under strict quality control processes.

Get in Touch

For quotes, samples, or OEM inquiries, visit our official website to connect with our sales team.

Visit Official Website

Hangzhou North Star Seal Co., Limited © 2016–2025. All Rights Reserved.

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