Schutz Automatic Lock

Schutz’s Automatic Lock is a bung cap system for PE drums that consists of a plug and a tamper-proof sealing cap, either in red or white. The system cannot be opened without breaking the seal cap, as the inner seal ring is firmly incorporated in the ring. The filling product is fully protected against unwanted discharge or contamination. The seal cap is available for a variety of different bung sizes.

It can be fitted automatically or manually. First, the seal cap is placed on the bung; it centres itself automatically due to the position of the snap latches. Light pressure on the positioned seal cap makes the locking ring snap into place behind the snap latches in the bung. The rigid construction ensures the lock remains securely in place once fitted. The plastic tab connectors on the cap and the inner seal ring tear when the cap is opened. The ring is perforated, making it easy to lift off the cap. The cap is opened and lifted off in a single movement by pulling on the seal cap ring pull, allowing the bung to be unscrewed and the contents to be removed.

The seal cap is held by the plug and not by the bung. The broken seal cannot be repaired, and any tampering is instantly visible.

The sealing system is user-friendly: the integrated ring pull does not require an extra tool for opening, as is the case with steel sealing caps.