The Trusted Engineering-Grade Sealing Partner for Water, Gas & Industrial Piping.

Language:
English
Always On Duty
Engineered Like a Soldier. Tested Like a Guardian.

About ForeverSeal

The Trusted Engineering-Grade Sealing Partner for Water, Gas & Industrial Piping.Always On Duty
Engineered Like a Soldier. Tested Like a Guardian.
Home / About Us

Same Name. Stronger Promise.

A new logo that sharpens who we are—
engineering-grade sealing you can rely on, always.

About ForeverSeal®

Since 2009, a Trusted Engineering-Grade Sealing Partner for Water, Gas, and Industrial Pipelines

Founded in 2009, ForeverSeal is a leading global manufacturer specializing in PTFE thread sealant tape.

For over 16 years, we have been deeply committed to a seemingly simple yet crucial product for system safety—PTFE Thread Seal Tape.
tIn gas, water, chemical, and industrial piping systems, what truly determines safety is often not the most expensive equipment, but every unseen connection point.

At ForeverSeal, "for every pipe connection, the seal is not just a fitting, but a line of defense. We uphold this line of defense with the loyalty of a soldier, ensuring that trust is never betrayed." Protecting these critical connections, achieving long-term, stable, and verifiable zero-leakage seals.

Today, our products are trusted worldwide:

  • National water and gas companies
  • International engineering contractors
  • Industrial equipment manufacturers (OEMs)
  • Regional authorized distributors and industrial channel partners

In recent years, while continuously strengthening our core sealing business, we have strategically extended our PTFE material expertise to ePTFE functional membranes under the SunFilm® brand, serving advanced fields such as 5G communications, medical devices, and new energy systems.

17+

Years Focus

88+

Countries

420+

Clients

0

Zero-Leak Standard

Brand Portfolio

  • ForeverSeal® PTFEThread Sealing Tape

    We do more than just manufacture tapes—we provide engineered sealing solutions for actual piping systems. Every ForeverSeal® product is designed with "Always On Duty" in mind—it won't fail due to environmental changes, nor will it deteriorate over time.

    ForeverSeal® product portfolio covers a variety of typical application scenarios:

    Aqua® PTFE Tape
    General-purpose seals suitable for water, air, and low-pressure steam systems, WRAS certified.
    GasSafe® PTFE Tape
    For natural gas/LPG, compliant with UL, DVG (EN 751-3), and AGA standards.
    UltraGas®PTFE Tape
    For medical oxygen, hydrogen, and other specialty gas systems (low-pressure applications only), compliant with BAM standards.
    ChemGuard®PTFE Tape
    For highly corrosive chemicals.
    Industrial Pro®PTFE Tape
    General industrial sealing solutions.
    Xtreme® PTFE Tape
    For ultra-high temperature and highly corrosive environments.

    Customized models for special media, pressure ratings, and installation specifications.

    Global Compliance and Certification

  • SunFilm® ePTFEFunctional Film

    We focus on ePTFE (expanded PTFE) functional films, serving high-end fields with extremely stringent material performance requirements.

    In delivering billions of meters of PTFE sealing tape to water and gas systems worldwide, we have accumulated a deep understanding of high-purity PTFE resin processing, precision stretch control, and clean production systems.

    Based on this core capability, ForeverSeal launched the independent brand SunFilm® in 2021. This is not diversification, but rather an extension of the boundaries of "material reliability."

    We only enter applications that demand the same long-term stability and zero compromise. Focusing on ePTFE (expanded PTFE) functional films, serving high-end fields with extremely stringent material performance requirements:

    High-frequency communication for 5G and millimeter-wave coaxial cables
    ultra-low dielectric constant (Dk ≈ 1.3–1.5), excellent flexibility, and high-frequency signal transmission stability
    Aerospace conductors
    insulation, lightweight, resistance to high and low temperatures, and anti-aging properties
    Key materials in high-end protection and precision engineering
    waterproof, breathable, windproof, and chemically resistant
    New energy technologies
    chemically stable films for hydrogen fuel cells and lithium battery systems

    All SunFilm® products are manufactured in independent cleanrooms with strict quality control and traceability standards.

Get to Know Our Founder

The Guardian That Never Walks Away

My days standing guard in the military are still vivid in my mind.
No matter the pouring rain, the blazing sun, or the biting cold of night— once you were on post, you never left.
Because behind you stood responsibility, trust, and the safety of countless people.That belief never faded, even after I took off the uniform.When I founded ForeverSeal, I asked myself:
“How do you turn the spirit of standing guard into a single roll of tape?”

The answer was simple:Make it act like a loyal sentinel—quietly holding its position at every threaded connection.

At -200°C (-328°F), it won’t crack.
At +260°C (500°F), it won’t soften.
Against gas, steam, and aggressive chemicals, it never backs down.

It doesn’t speak—but it never leaks.
It may look ordinary—but it protects what matters most.

This is ForeverSeal—
not the loudest promise, but the most dependable one.

Because we believe:True reliability means never leaving your post—no matter the conditions.

Explore More

Development History

2009

The Beginning

FOREVERSEAL was founded on June 29, 2009, in a rented 800 m² workshop, where we began producing PTFE thread seal tape with courage, resilience, and a clear vision for the future.

2010

Going Global

With strong support from the local government, FOREVERSEAL secured a permanent booth at the Canton Fair, laying the foundation for lasting international partnerships and global market expansion.

2012

Rapid Growth

FOREVERSEAL achieved a new sales milestone and obtained UL certification on June 29, opening the door to the North American market and marking our move toward the mid- to high-end segment.

2013

Our First Purpose-Built Plant

On January 31, FOREVERSEAL moved into its first self-built facility in Hangzhou, covering 5,000 m² of land with a 4,500 m² production area.

2014-2015

Manufacturing and Quality Upgrade

Automatic cutting and rewinding equipment improved production efficiency and product consistency. FOREVERSEAL also obtained ISO 9001 certification, strengthening standardized manufacturing and quality management.

2018

A New Chapter in Manufacturing

FOREVERSEAL relocated to a modern 9,000 m² facility in Linglong Industrial Zone, significantly increasing production capacity. In the same month, we obtained WRAS certification for drinking-water pipeline applications.

2019

Celebrating Our 10th Anniversary

FOREVERSEAL celebrated its 10th anniversary with a company trip to Beijing and invested RMB 3 million in nine fully automated injection molding machines, improving precision and reducing labor costs by approximately 50%.

2020-2023

Innovation Beyond PTFE Tape

FOREVERSEAL invested RMB 10 million in advanced equipment for ePTFE film. After three years of R&D, the high-performance material was adopted for low-loss and phase-stable military cable applications.

2024

International Certifications

FOREVERSEAL obtained Germany’s DVGW certification and passed BAM testing for oxygen pipeline applications. We also established a strategic partnership with CHART, expanding into specialized industrial markets.

2025

Expanding Global Recognition

Building on the AGA gas certification obtained for our yellow PTFE tape in Australia, FOREVERSEAL continued strengthening its presence in the Australian gas market and expanding international recognition.

The Future

The Story Continues

From a single roll of PTFE tape to global recognition, FOREVERSEAL will continue its journey of quality, trust, innovation, and long-term commitment.

Get to Know Us

R&D

At ForeverSeal, research and development does not end with "material parameters," but rather with the goal of sealing reliability in real-world operating conditions.

Explore More

Manufacturing Capabilities

ForeverSeal currently has a 10,000㎡ modern manufacturing base in Hangzhou, focusing on the large-scale, standardized production of PTFE sealing products.

Explore More

Exhibition Information

ForeverSeal continuously participates in major global exhibitions related to pipelines, gas, water, and industrial technology.

Explore More

News & Insights

Sharing updates on new certifications and market access, new product or specification releases, application cases, and system solutions.

Explore More

People & Community

Growing Together, People First

Employee Welfare

  • All employees enjoy comprehensive social insurance.
  • 100% annual medical check-up coverage.
  • Safety training ≥ 20 hours/year.
  • 0 major work-related injuries in the past three years.

Skills Development

  • Jointly organize a "PTFE Process Technician" training program with a professional college
  • Annual internal technical skills competition aimed at improving process standards

Community Engagement

  • Donating science lab kits (including safe PTFE samples) to local schools
  • "Green Factory Open Day" aims to promote community visits and raise environmental awareness

Sustainability and Security

In the world of sealing and signaling, reliability is not only reflected in product performance, but also in how we treat the planet, our employees, and our partners.As a PTFE material manufacturer, we are acutely aware of the potential energy and environmental impact of the fluorochemical industry.
For us, sustainability is not just an environmental indicator,but also an engineering responsibility to ensure systems don't need replacement for a longer period.Therefore, ForeverSeal integrates "responsible innovation" into its corporate DNA—from the factory to the supply chain, from products to the community.Explore More

Get in contact

From Evaluation to Long-Term Supply

Whether you're conducting material qualification, developing OEM configurations,or preparing for bulk purchases, ForeverSeal® supports your projects with consistent quality, engineering control, and reliable supply.

Request Samples

Test performance, discuss custom specs, or get volume pricing—backed by a manufacturer focused on mission-critical applications.

Request Samples

Download Tender Docs

Certified specs, compliance files, and test data—ready for bidding and approval in gas, chemical, and industrial projects.

Get Certified Documents

Become a Partner

Collaborate with a manufacturer built for regulated markets—not commodity products—and build lasting channel value.

Become a Partner
Always On Duty
Engineered Like a Soldier. Tested Like a Guardian.

ForeverSeal® Thread Sealing

Pipe Sealing Applications

Work With Us

SunFilm® Advanced PTFE Materials

Company & Resources

About UsNewsContactFAQsPrivacy NoticeTerms & Conditions
Copyright © 2026 Hangzhou Forever Plastics Co.,Ltd Support By BEE Cloud