53 mm ROPP Aluminum Cap

53mm ROPP (Roll On Pilfer Proof) aluminum cap is an aluminum tamper-evident bottle cap manufactured through a roll-forming process, specifically designed for glass bottles or PET bottles. Its core feature is that the tamper-evident band (made of plastic or aluminum) breaks and separates upon opening, providing a tamper-indication function.

53 mm ROPP Aluminum Cap Product Details

ID (A) Max: 53.8
ID (A) Min: 53.3
OD (B) Max: 54.3
OD (B) Min: 53.8
Height (C) Max: 18.7
Height (C) Min: 17

53 mm ROPP Aluminum Cap Material and Surface Treatment

Made from food-grade aluminum with customizable surface treatments:

Vinyl inner coating, with a glossy or gold inner surface
Appearance: glossy transparent varnish; logos/patterns can be printed using flexographic printing
Customizable color options: silver, gold, white, or any Pantone color for brand promotion

The cap is available in solid color or full print, including logos or product identifiers

Offered in solid metallic finishes (gold, silver, white) or Pantone color matching

53 mm ROPP Aluminum Cap Functions and Performance

Provides tamper-evident sealing: upon first opening, you will see/hear the skirt tearing
When properly applied, ensures leak-proof sealing—even when inverted, no leakage
Suitable for glass, PET, and HDPE bottles
The liner helps prevent leakage, evaporation, and deterioration

53 mm ROPP Aluminum Cap Features

Tamper-evident: TE ring breaks upon opening, indicating product safety
Barrier performance: prevents moisture, oxygen, and contaminants from entering
Customization: available in multiple colors (silver, gold, red, black, etc.), with printing, embossing, and lacquer finishes
Compatibility: suitable for glass/plastic bottles in pharmaceutical, beverage (spirits, wine), and food industries

53 mm ROPP Aluminum Cap Applications

Pharmaceuticals: sealing syrup bottles to protect medicine integrity
Beverages: widely used for spirits, wine, and carbonated drinks
Food and cosmetics: ensures leak-proof packaging for oils, sauces, and lotions

53 mm ROPP Aluminum Cap Advantages

Safety: tamper-evident design effectively prevents counterfeiting
Sustainability: made from fully recyclable aluminum
Versatility: supports induction sealing and aluminum foil liners for enhanced protection

Comparison of Common ROPP Cap Sizes

Diameter	Typical Height	Primary Applications
28 mm	15.5–18 mm	Water, beer, soft drinks
46 mm	18–24 mm	Beer, coffee, liquor, pharma
53 mm	Custom	Industrial chemicals

53 mm ROPP Aluminum Cap Quality Inspection Standards

Inspection Item	Method and Requirements
Appearance Inspection	Surface must be smooth without scratches or dents, with uniform color
Dimensional Tolerance	Diameter, height, and other parameters must conform to the 53 mm specification tolerance range
Tensile Strength	≥350 MPa (to simulate resistance to deformation during transport and use)
Airtightness	Must pass air pressure test with no leakage (critical for pharmaceutical/food packaging)
Corrosion Resistance	No signs of corrosion after 500-hour salt spray test