25mm ROPP Cap

Product Overview

The 25mm ROPP cap is a small-diameter aluminum screw cap specifically designed for glass bottle packaging. It is widely used in the sealing of alcoholic beverages, functional drinks, oral liquids, medical syrups, and dietary supplements. Combining anti-counterfeiting, tamper-evidence, strong sealing, and brand presentation, it has become an essential component in mid- to high-end liquid packaging.

25mm Aluminum ROPP Cap: Small Neck, Strong Protection

“25mm” refers to the inner diameter of the cap, making it suitable for bottles with a mouth outer diameter of approximately 25mm. The precise dimensional match, paired with the ROPP cap’s unique roll-on and press-threaded design, ensures secure sealing, leak prevention, and tamper evidence.

This 25mm size is a standard specification widely used across the industry, making it easy for manufacturers and buyers to match and source efficiently.

Key Advantages of the 25mm Aluminum ROPP Cap

1. Ultimate Tamper-Evident Protection
The precision roll-formed tamper-evident band breaks upon forced opening, leaving physical traces that prevent product tampering or refilling.

2. Superior Sealing Performance
Food-grade liners (PVC/PE/gasket) create a tight fit with the bottle mouth, achieving oxygen barrier rates >99.5% and zero loss of volatile components — ideal for essential oils, spirits, and high-activity drugs.

3. Micro-Sized, High-Precision Design
Tailored for ultra-small bottle openings (typically 5–50ml bottles), solving sealing challenges for compact liquid products.

Technical Specifications of the 25mm ROPP Cap

Applications

• Alcohol Packaging: Small wine bottles, spirits

• Functional Beverages: Energy drinks, herbal beverages

• Pharmaceuticals: Oral liquid, syrup bottles

• Personal Care: Essential oils, small-dose treatments

Custom Service Support

We provide one-stop processing services, from aluminum sourcing → sheet pre-treatment → cap forming → printing and coating → final packaging.
Support is available for low-volume trial orders and high-volume mass production, offering flexibility to meet your customized needs.

Why Choose HAOMEI Aluminum?

• Over 10 years of industry experience, mature processes

• Fast sample development, reduced lead times

• Strict quality control, compliant with food-contact regulations

• One-on-one technical support and design services

FAQ

Q1: What is an ROPP cap and how is it different from a regular screw cap?
A1: ROPP stands for Roll-On Pilfer-Proof. Unlike ordinary screw caps, ROPP caps require a special capping machine to roll the cap onto the bottle neck during bottling. This process forms a tight fit and a tamper-evident ring that breaks or deforms when opened, providing both anti-counterfeiting and anti-refill protection.

Q2: Can I customize the color and printed design?
A2: Absolutely! We offer various surface finishes including color spraying, screen printing, offset printing, hot gold/silver stamping, top embossing, or internal logo printing.

Q3: Is the cap suitable for food or pharmaceutical packaging? Any certifications?
A3: Yes. We use 8011-H14 or 3105 food-grade aluminum alloy, compliant with China GB, EU RoHS, and FDA food-contact standards. Safe, reliable, and widely used in the food, beverage, and pharmaceutical sectors.

Q4: What is your minimum order quantity (MOQ)? Can I request samples?
A4: We support flexible order volumes. For standard colors, the MOQ is 5,000–10,000 pcs. For custom printed designs, the MOQ starts at 30,000 pcs.
Sample development is available free or at low cost, based on your design files.