Black aluminum screw cap with PE seal, suitable for manually closing glass bottles.

Aluminum Screw Cap PP 31.5 Black

The Aluminum Screw Cap PP 31.5 Black is a black aluminum screw-top closure with a PE foam gasket for manual sealing of glass bottles, designed primarily as a spirit closure and for low-pressure applications.

• Aluminum screw cap PP 31.5 in black
• PE foam gasket for reliable sealing
• Designed for manual capping of glass bottles
• Suitable for spirits and internal pressure under 1 bar

Long-lasting aluminum design

The body is made from aluminum, offering a stable yet lightweight closure that tolerates frequent handling. The black finish reduces visible wear and supports a uniform shelf appearance. This increases uptime and lowers rejects in routine filling.

Secure sealing with foam gasket

A PE foam gasket sits inside the cap to ensure a consistent seal against glass. The gasket compensates for minor neck tolerances and reduces leakage risk. This leads to fewer customer complaints and lower product loss during storage.

Suited for manual capping workflows

Designed for hand sealing, the cap fits into small-batch and craft production processes. Operators can close bottles quickly without special tools. This keeps setup simple and supports flexible production runs.

Tested for spirits and low pressure

The closure is specified for use as a spirit closure and is suitable for internal pressures below 1 bar. Its pressure rating matches typical spirit bottling and storage conditions, helping to maintain content integrity and safety.

Precise PP 31.5 neck compatibility

The cap matches the PP 31.5 neck finish for reliable threading and consistent torque behavior. Compatibility reduces sealing errors and shortens quality checks at packing stations, supporting faster line throughput.

Trade-oriented packaging and supply

Packaging units are adapted to commercial bottlers and fillers, enabling smooth replenishment in production. Larger quantities are available on manageable pallets for streamlined logistics and easier warehouse handling.

Minimal integration effort on lines

The screw geometry and consistent dimensions allow the cap to be incorporated into semi-automatic or manual stations without modification. This reduces retrofit time and ensures predictable cycle times on packing lines.

Recommended for bottlers seeking a robust black aluminum spirit closure with dependable PE foam sealing and simple manual application.

Kernfeatures

Durable aluminum construction

The aluminum shell provides mechanical stability while keeping weight low. The robust housing protects the gasket and supports repeated manual handling without deformation.

PE foam gasket for leak protection

The closed-cell PE foam insert creates a uniform compression seal. This minimizes seepage and preserves aroma and alcohol content in spirit products.

Suitable pressure range and application

Specified for pressures below 1 bar, the closure meets the requirements for spirit bottling and low-pressure beverages. The cap performs reliably in typical cellar and retail conditions.

PP 31.5 thread fit

Engineered for the PP 31.5 neck finish, the cap ensures repeatable thread engagement and consistent torque values. This reduces variability during manual closure.