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Precision Seal Rings
Engineered to Perform

High-performance sealing solutions from Qingdao Peak Mould Co., Ltd. — trusted in industrial, automotive, aerospace, and chemical applications worldwide.

About Qingdao Peak Mould

Established in May 2007 and located in Qingdao City, Shandong Province, China, Qingdao Peak Mould Co., Ltd. is a leading manufacturer of precision mold development and high-performance seal rings.

We operate with a core philosophy of "Efficient, Innovation, Service," ensuring quality-first production with flexible and rapid scheduling to meet global demands.

Certified Quality

GB/T 19001-2016 / ISO 9001:2015

Seal Ring Manufacturing Precision Molding Seal Ring Close-up Factory Equipment

What Is a Seal Ring?

Sealing rings are critical components used to prevent air or liquid leakage between connected parts. Made from advanced materials like rubber, synthetic resins, and high-performance polymers, they ensure tight contact under pressure.

Their functions go beyond sealing — they also reduce pressure fluctuations, provide shock absorption, and prevent loosening in dynamic environments.

Leak Prevention

Ensures airtight and watertight seals in pipelines, engines, and hydraulic systems.

Pressure Control

Absorbs pressure spikes and maintains system stability in high-stress environments.

Anti-Vibration

Reduces mechanical shock and prevents component loosening during operation.

Our Product Range

PEEK Machined Seal Ring

PEEK Machined Seal Ring

High-temperature resistant, chemically inert polymer ideal for aerospace and medical applications.

  • Material: PEEK
  • Processing: Machining
  • Temp Range: -60°C to +260°C
  • Applications: Oil & Gas, Semiconductor
PTFE Seal Ring

PTFE Seal Ring

Low friction, excellent chemical resistance. Ideal for dynamic sealing applications.

  • Material: PTFE
  • Processing: Machining
  • Temp Range: -200°C to +260°C
  • Applications: Chemical, Food Processing
PTFE + Graphite

PTFE + Graphite Seal

Enhanced thermal conductivity and wear resistance for high-load environments.

  • Material: PTFE + Graphite
  • Processing: Machining
  • Temp Range: -200°C to +300°C
  • Applications: Pumps, Valves, Compressors
PTFE + Glass Fiber

PTFE + Glass Fiber

Improved mechanical strength and dimensional stability under load.

  • Material: PTFE + Glass Fiber
  • Processing: Machining
  • Temp Range: -190°C to +260°C
  • Applications: Automotive, Industrial
PTFE + Copper

PTFE + Copper Seal

High thermal conductivity and anti-static properties for sensitive environments.

  • Material: PTFE + Copper
  • Processing: Machining
  • Temp Range: -200°C to +260°C
  • Applications: Electronics, Energy
PA Molded Seal

PA (Nylon) Molded Seal

Tough, abrasion-resistant thermoplastic with good fatigue resistance.

  • Material: PA
  • Processing: Molded
  • Temp Range: -40°C to +120°C
  • Applications: Automotive, Hydraulics

Torlon Molded Seal

High-strength polyamide-imide with exceptional thermal and chemical resistance.

  • Material: Torlon
  • Processing: Molded
  • Temp Range: -270°C to +275°C
  • Applications: Aerospace, Defense

VESPEL Seal Ring

Ultra-high-performance polymer with low outgassing and excellent wear life.

  • Material: VESPEL
  • Processing: Molded
  • Temp Range: -269°C to +315°C
  • Applications: Space, Vacuum Systems

Metal Seal Ring

Used in extreme pressure and temperature conditions where elastomers fail.

  • Material: Stainless Steel, Copper, Aluminum
  • Processing: Molded / Machined
  • Temp Range: -200°C to +1000°C
  • Applications: Nuclear, Petrochemical

Why Choose PKSealRing?

ISO 9001 Certified

Compliant with GB/T 19001-2016 / ISO 9001:2015 standards for consistent quality assurance.

Advanced Processing

Precision machining and molding techniques ensure tight tolerances and repeatability.

Rapid Turnaround

Flexible production scheduling enables fast delivery without compromising quality.

Custom Design Support

Tailored solutions based on your material, size, and environmental requirements.

16+
Years in Business
50+
Global Clients
1000+
Custom Projects
99.8%
Quality Pass Rate

Frequently Asked Questions

What materials do you offer for seal rings?

We offer PEEK, PTFE (pure and filled with graphite, glass fiber, or copper), PA (Nylon), Torlon, VESPEL, and metal-based seal rings.

Can you produce custom-sized seals?

Yes, we specialize in custom manufacturing. Provide your specifications and we’ll deliver precision-engineered seals to your exact requirements.

What industries do you serve?

Our seals are used in aerospace, automotive, oil & gas, chemical processing, medical devices, semiconductors, and more.

Do you comply with international quality standards?

Yes, we are certified under GB/T 19001-2016 and ISO 9001:2015, ensuring consistent quality and process control.

What is the lead time for custom orders?

Typically 2–4 weeks depending on complexity and quantity. We prioritize fast turnaround without sacrificing quality.

Get in Touch

Ready to discuss your sealing needs? Contact Qingdao Peak Mould Co., Ltd. for expert support and custom solutions.

Contact Information

Address: 17 Chengkang Road, Chengyang District, Qingdao City, Shandong Province, China

Phone: +0086-18763009377

Fax: +0086-0532-67730522

Email: sales@peakmold.com, sales5@peakmold.com

Visit Official Website

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