4S®-Closure System

For over 85 years, steel drums fitted with Tri-Sure® closures have set the international standard and they continue to do so. Our innovative Tri-Sure® 4s® double washer system creates an "airbag" for your drum. Each metal flange is fitted with two rubber washers to prevent leakage more effectively.

✓ The Tri-Sure® 4s® closure system reduces your liability exposure.
✓ The drum manufacturer can supply drums performing to the highest global standards.
✓ Global manufacturing footprint ensures trouble-free supply. 
✓ Drum fillers can rest assured that the drums' content is sealed with maximum security.
✓ Everyone will benefit from a hazard-free environment.
✓ The wider chemical resistance of the two washers combined can help you to reduce your number of drum and closure specifications.