Bottle Caps And Closures Reusable Caps For 5-Gallon Water Bottles
Our reusable caps for 5-gallon water bottles are designed to provide a secure, leak-proof, and eco-friendly solution for sealing 5-gallon water containers. Widely used in offices, schools, households, and water delivery services, these caps replace disposable options, reducing plastic waste while ensuring long-term durability. Crafted with food-grade materials, they meet global safety standards, making them a reliable choice for high-quality clients seeking sustainability and functionality.
- Core Material: Food-grade polypropylene (PP)
- Feature: BPA-free, non-toxic, odorless, and resistant to corrosion from water and common cleaning agents.
- Temperature Resistance: -20°C to 120°C (-4°F to 248°F), suitable for both cold and warm water storage.
- Sealing Component: Food-grade silicone gasket
- Feature: High elasticity, excellent leak-proof performance, and no deformation after long-term use.
| Parameter | Specification |
| Outer Diameter | 85mm ± 0.5mm |
| Inner Diameter (Fitting 5-Gallon Bottle Mouth) | 55mm ± 0.3mm (compatible with standard 5-gallon water bottle threads) |
| Height | 30mm ± 0.5mm |
| Weight | 25g ± 1g |
- Leak-Proof Rate: 100% leak-proof when properly installed (tested under 0.5MPa water pressure for 24 hours).
- Reusability: Can be reused up to 500+ times with proper cleaning and maintenance.
- Load-Bearing Capacity: Withstands a top load of 5kg without cracking (suitable for stacking 5-gallon bottles).
- Certifications: Compliant with FDA (US), LFGB (EU), and GB 4806.7-2016 (China) food contact material standards.
Our production process adheres to strict quality control standards to ensure consistent product performance. The key steps are as follows:
- Source food-grade PP pellets and silicone raw materials from certified suppliers (with batch-specific certification documents).
- Test raw materials for BPA content, toxicity, and mechanical properties using a third-party laboratory (SGS or Intertek) to eliminate substandard materials.
- Dry PP pellets at 80°C for 2-3 hours to remove moisture (prevents bubbles in the final product).
- Feed dried PP pellets into a precision injection molding machine (clamping force: 1200kN).
- Set molding parameters: Temperature (barrel: 180-220°C; mold: 40-60°C), injection speed: 50-70mm/s, holding pressure: 50-70MPa.
- Mold the PP cap body with integrated thread structures (matches standard 5-gallon bottle mouth threads) – cycle time: 30-40 seconds per unit.
- Mix silicone rubber with food-grade vulcanizing agents (ratio: 100:2) and stir uniformly.
- Use compression molding to form silicone gaskets: Temperature: 160-180°C, pressure: 10-15MPa, curing time: 3-5 minutes.
- Trim excess flash from gaskets to ensure smooth edges.
- Automatically assemble silicone gaskets into PP cap bodies using a robotic assembly line (accuracy: ±0.1mm).
- Conduct a manual spot check to ensure gaskets are fully seated and not misaligned.
- Leak Test: Submerge 5% of each batch in water and apply 0.3MPa pressure – no bubbles allowed.
- Dimensional Test: Use a coordinate measuring machine (CMM) to check 3% of products for compliance with size specifications.
- Material Test: Randomly select 1% of products for BPA and toxicity testing every month.
- Durability Test: Simulate 500 opening/closing cycles on 2% of products – no cracks or gasket deformation permitted.
- Clean qualified caps with food-grade disinfectant and dry them.
- Package in individually sealed PE bags (food-grade) to prevent dust and contamination.
- Place packaged caps in corrugated cartons (with anti-collision foam inserts) – 500 caps per carton.
- Label cartons with batch number, production date, and certification marks (FDA, LFGB) for traceability.
We offer flexible customization to meet the unique needs of high-quality clients (e.g., water delivery companies, corporate clients, and branded beverage suppliers).
- Consultation: Clients provide customization requirements (color, logo, functionality) and quantity.
- Sample Development:
- Create a 3D design draft within 2 working days for client approval.
- Produce 5-10 physical samples within 5-7 working days (sample fee: $50-$200, refundable upon bulk order).
- Approval & Production: Start bulk production once clients confirm samples (production lead time: 10-15 working days for orders under 10,000 units; 20-25 days for orders over 50,000 units).
- Quality Assurance: Conduct 100% inspection on customized products to ensure logos/functions meet requirements.
- Standard color/logo customization: MOQ 500 units.
- Functional customization (anti-theft ring, vent valve): MOQ 2,000 units.
- Special material customization (high-temperature/UV-resistant PP): MOQ 5,000 units.
- Water Delivery Services: Securely seal 5-gallon bottles for door-to-door delivery (reduces leakage during transport).
- Corporate/Office Use: Reusable option for pantry water dispensers (cuts down on disposable plastic waste).
- Schools & Hospitals: Food-grade, non-toxic design ensures safety for students and patients.
- Outdoor & Camping: Durable and leak-proof – suitable for storing water in outdoor settings.
- Warranty: 1-year warranty against material defects (free replacement for defective products within the warranty period).
- After-Sales Support: Respond to client inquiries within 24 hours; provide technical guidance for installation and maintenance.
- Traceability: Each batch can be traced back to raw materials and production steps via the batch number on cartons.
