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Sunring Caps Industry Inc Logo

Sunring Caps Industry Inc

Manufacturer of Plastic & Rubber Caps & Plugs

Premium Plastic & Rubber Caps & Plugs

Since 2002, Sunring Caps has delivered high-performance protective caps and plugs for essential oil bottles, food & beverage containers, petrochemical pipelines, and industrial applications.

Sunring Caps Factory

About Sunring Caps Industry Inc

Since 2002, Sunring Caps Industry Inc has specialized in the design and manufacturing of high-quality plastic and rubber caps and plugs. We serve global industries including essential oils, food & beverage, petrochemicals, and industrial manufacturing.

Our expertise spans Bakelite/phenolic/urea caps, Boston-style essential oil caps, pipe and flange protectors, tapered plugs, and custom injection-molded solutions. With extensive molding capabilities, we offer a wide selection of vinyl, rubber, and plastic protective components.

2002
Founded
50+
Countries Served
24/7
JIT Support

Our Product Range

Precision-engineered caps and plugs for diverse industrial, commercial, and consumer applications.

Essential Oil / Boston Caps

Essential Oil / Boston Caps

Durable plastic and phenolic caps designed for essential oil bottles and Boston round containers. Resistant to oils and solvents.

  • Chemical resistant
  • Tamper-evident options
  • Custom colors & sizes
Food, Beverage & Water Cap Series

Food, Beverage & Water Caps

FDA-compliant caps for food-grade containers, water bottles, and beverage packaging.

  • BPA-free materials
  • Leak-proof sealing
  • Custom branding
Pipe & Flange Protector

Pipe & Flange Protectors

Heavy-duty plastic and rubber protectors to safeguard pipe threads and flange faces during transport and storage.

  • Impact resistant
  • UV-stabilized options
  • High-temp variants
Phenolic Caps

Phenolic / Bakelite Caps

High-strength, heat-resistant caps made from urea or phenolic resins for industrial and electrical applications.

  • Heat resistant up to 150°C
  • Excellent electrical insulation
  • Durable & non-conductive

Bottle & Caps

Complete closure solutions for laboratory, cosmetic, and pharmaceutical bottles.

  • Child-resistant options
  • Dropper & sprayer caps
  • Liner compatibility

Liners & Seals

Inner seals and liners for enhanced leak protection and product integrity.

  • Foam, cork, and induction seals
  • Tamper-evident foils
  • Custom thickness & materials

Petrochemical Series

Chemical-resistant caps and plugs for oil, gas, and petrochemical pipeline systems.

  • Corrosion resistant
  • High-pressure tolerance
  • API-compliant options

Aerosol Industry Series

Specialized caps and actuators for aerosol cans and spray containers.

  • Precision spray control
  • Leak-proof design
  • Ergonomic triggers

Our Manufacturing Capabilities

From design to delivery, we offer end-to-end solutions with precision, speed, and quality.

Injection Molding & Tooling Design

Our engineers collaborate with clients to design molds using CAD/CAM software. We specialize in low-cost tooling with rapid prototyping and testing to ensure production readiness.

  • Custom mold development
  • Prototype validation
  • Fast turnaround

Comprehensive Quality Control

We maintain a rigorous quality management system with in-process and final inspections to ensure every cap and plug meets exact specifications.

  • ISO-compliant processes
  • Dimensional accuracy checks
  • Material traceability

ERP Management & JIT Shipping

Our ERP system enables just-in-time (JIT) inventory management and 24/7 order readiness for fast global shipping and supply chain efficiency.

  • Real-time order tracking
  • 24/7 dispatch readiness
  • Global logistics support
20+
Years in Business
500+
Custom Molds
50+
Countries Served
24/7
Support & Shipping

Frequently Asked Questions

What materials do you use for caps and plugs?

We use a wide range of materials including polyethylene (PE), polypropylene (PP), PVC, rubber, silicone, and phenolic/Bakelite resins depending on application requirements.

Can you customize caps with logos or colors?

Yes, we offer full customization including color matching (Pantone), embossing, debossing, and printing for branding and identification.

What is your minimum order quantity (MOQ)?

MOQ varies by product and customization level. We work with clients of all sizes and can discuss flexible options based on your needs.

Do you provide samples?

Yes, we offer prototype and pre-production samples for approval before full-scale manufacturing.

Get in Touch

Contact Sunring Caps Industry Inc for custom solutions, quotes, and technical support.

Contact Information

Contact: Mr. Wang

Phone: 0574-86162017

WhatsApp: 0574-86162017

Email: [email protected]

Address: Building 28, Binjiang Industry Zone, Xiaogang, Beilun District, Ningbo City, Zhejiang, CHINA, 315803

Hours: Monday - Saturday (9am - 6pm)

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