Professional Plastic Screw Cap with Center Hole for Specialized Bottle Packaging
In pharmaceutical, laboratory, and specialty packaging applications, standard screw caps are not always sufficient. Plastic caps with center holes are widely used for controlled dispensing systems, dropper integration, tubing access, and laboratory applications.
Supply-Packagings is a professional packaging manufacturer, factory, supplier, and wholesale partner specializing in:
✅ Plastic bottle caps & closures
✅ Pharmaceutical packaging components
✅ Supplement bottle packaging
✅ Laboratory container closures
✅ Cosmetic bottle packaging
✅ Flexible pouch packaging
✅ Custom paper box packaging
✅ OEM & ODM custom packaging solutions
This plastic screw cap with center hole is engineered for specialized packaging systems requiring precision fit and functional integration.
Core Selling Points – Why Choose Our Plastic Hole Caps
Precision-Molded Center Hole Design
▪ Clean, symmetrical center opening
▪ Suitable for tubing, dropper, or insert integration
▪ Accurate diameter control
▪ Smooth edge finish
Ensures compatibility with custom dispensing systems and laboratory equipment.
Durable & Food-Grade Plastic Material
▪ PP (polypropylene) construction
▪ Chemical-resistant surface
▪ Impact-resistant design
▪ Suitable for pharmaceutical and supplement packaging
Maintains structural integrity under repeated opening and closing.
Full OEM & ODM Customization Support
▪ Custom cap diameter (28mm / 33mm / 38mm / Custom)
▪ Custom thread type (24T / 28T / Custom)
▪ Custom hole diameter
▪ Logo embossing or printing
▪ Matching bottle, jar, pouch, and paper box packaging integration
As a direct manufacturer and wholesale supplier, Supply-Packagings ensures stable production quality and dimensional accuracy.
Detailed Product Description – Plastic Screw Cap with Hole
This specialized closure is suitable for:
• Laboratory reagent bottles
• Pharmaceutical liquid containers
• Controlled dispensing systems
• Essential oil packaging with custom insert
• Supplement bottle modifications
• Industrial and chemical packaging
Compared to standard screw caps, hole caps allow:
• Insert installation (dropper, tube, plug)
• Custom dispensing control
• Specialized application compatibility
Caps can be paired with inner liners or gasket systems depending on sealing requirements.
Functional Structure Breakdown
Cap Body Construction
▪ Injection-molded PP material
▪ Smooth top surface
▪ Textured grip edge
▪ Uniform wall thickness
Thread Compatibility
▪ Continuous thread design
▪ Custom neck compatibility
▪ Secure bottle engagement
▪ Leak-resistant design (with liner)
Center Hole Customization
▪ Adjustable hole diameter
▪ Smooth internal finish
▪ Compatible with insert or tube
▪ Custom shape option
Decoration & Branding Options
▪ Top surface embossing
▪ Printed logo
▪ Custom warning symbol
▪ Color injection customization
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Plastic Screw Cap with Hole |
| Material | PP |
| Diameter | Custom (28–38mm typical) |
| Thread Type | 24T / 28T / Custom |
| Hole Diameter | Custom |
| Surface Finish | Matte / Gloss |
| MOQ | 10,000 pcs |
| OEM / ODM | Available |
| Application | Pharma / Lab / Cosmetic |
| Factory Type | Direct Manufacturer |
Industries We Serve
Supply-Packagings supports:
✅ Pharmaceutical manufacturers
✅ Laboratory equipment suppliers
✅ Supplement packaging companies
✅ Cosmetic OEM brands
✅ Chemical packaging providers
✅ Wholesale packaging distributors
We integrate plastic caps, bottle packaging, jar packaging, blister packaging, flexible pouch packaging, and custom paper box packaging into complete packaging systems.
Application Scenarios
▪ Laboratory reagent bottle cap
▪ Controlled dispensing system
▪ Essential oil bottle modification
▪ Pharmaceutical liquid packaging
▪ Industrial chemical container closure
▪ Supplement bottle with insert system
Suitable for hospitals, laboratories, manufacturing facilities, and export markets.
Buyer Pain Points & Our Solutions
Problem: Incorrect Hole Size
Solution: Custom mold development ensures precise hole diameter based on application requirements.
Problem: Cap Leakage
Solution: Compatible liner and gasket options improve sealing performance.
Problem: Inconsistent Thread Fit
Solution: Custom thread specification ensures accurate bottle compatibility.
Problem: Multiple Packaging Vendors
Solution: One-stop packaging factory providing cap, bottle, jar, blister, pouch, and paper box integration.
Why Choose Supply-Packagings
✔ Direct packaging manufacturer
✔ Competitive wholesale pricing
✔ Strong OEM & ODM customization capability
✔ Advanced injection molding technology
✔ Strict quality inspection standards
✔ Stable global export experience
We help pharmaceutical and laboratory brands achieve functional precision and packaging reliability.
Packaging & Logistics
▪ Bulk inner polybag packing
▪ Export-standard corrugated cartons
▪ Palletized shipment available
▪ Sea freight / Air freight / Express delivery
▪ Custom carton labeling support
Lead Time:
Sample: 5–7 working days
Mass Production: 15–25 working days
FAQ
Can you customize the hole diameter?
Yes. We provide OEM custom hole size based on your insert or tubing requirements.
Is food-grade material available?
Yes. Food-grade PP material is available for pharmaceutical and supplement applications.
What is your MOQ for wholesale production?
Standard MOQ starts from 10,000 pieces depending on customization.
Do you provide matching bottle packaging?
Yes. We offer bottle packaging, jar packaging, blister packaging, flexible pouch packaging, and custom paper box solutions.
Customer Testimonials
“Accurate thread fit and stable quality for laboratory applications.” – US Lab Equipment Supplier
“Professional OEM closure manufacturer with strong customization support.” – EU Pharmaceutical Company
“Reliable wholesale partner with consistent production quality.” – AU Distributor
Explore More Packaging Solutions
Supply-Packagings also manufactures:
▪ Pharmaceutical Blister Packaging
▪ Supplement Bottle Packaging
▪ Glass Vial Packaging
▪ Cosmetic Bottle Packaging
▪ Flexible Pouch Packaging
▪ Custom Paper Box Packaging
▪ Pump & Dispenser Systems
Visit our products page for complete packaging development support.
Start Your Custom Plastic Closure Project Today
If you are searching for a trusted plastic screw cap manufacturer, packaging supplier, OEM factory, or wholesale custom packaging partner, Supply-Packagings is ready to support your specialized packaging needs.
Send us your cap diameter, thread type, hole size, and order quantity. Our professional team will provide a fast quotation and tailored packaging solution.
Ensure precise and reliable packaging with custom plastic caps — Contact Us today to begin your custom packaging project.
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