Wedge Wiper
For internal floating roof tanks
Custom-manufactured closed-cell foam wiper seal designed to provide reliable shell contact, chemical resistance, and long-term sealing performance for internal floating roof applications.
Overview
The DirecTank Wedge Wiper is a custom-manufactured, 100% closed-cell nitrile/vinyl foam wiper seal designed for internal floating roof tanks.
Engineered to maintain a tight fit against the tank shell throughout its service life, the Wedge Wiper provides excellent chemical resistance, abrasion resistance, retained flexibility, and shape retention under demanding storage conditions.
Depending on tank location, configuration, and permitting requirements, the DirecTank Wedge Wiper can be used as either a primary or secondary seal within internal floating roof systems.
Design & Construction
The DirecTank Wedge Wiper is manufactured from black, closed-cell nitrile/vinyl foam selected for durability, flexibility, and chemical compatibility.
- 100% closed-cell nitrile/vinyl foam construction
- Black material formulation, distinct from conventional orange foam alternatives
- Excellent retained flexibility and shape retention
- High tensile strength and temperature resistance
- Strong chemical compatibility across demanding stored products
- Excellent abrasion resistance against tank shell contact
- Available in 12-inch and 14-inch widths
- Available in low- and high-density options for performance and cost optimisation
Key Benefits
Reliable shell contact
Maintains a tight fit against the tank shell throughout the seal’s service life.
Chemical compatibility
Compatible with aggressive stored products, including MTBE, alcohol, hexane, and naphtha.
Durable foam construction
Closed-cell nitrile/vinyl foam provides strength, flexibility, and long-term shape retention.
Abrasion resistance
Material formulation helps withstand repeated contact and movement against the tank shell.
Primary or secondary use
Can be specified as a primary or secondary internal floating roof seal depending on tank and permitting requirements.
Configured for working range
Available in 12-inch and 14-inch widths, sized by DirecTank engineers to support API Standard 650 working range requirements.
Applications
DirecTank Wedge Wiper seals are suitable for internal floating roof applications including:
- Internal floating roof storage tanks
- Petrochemical storage
- Fuel and hydrocarbon storage
- Chemical storage applications
- Tanks storing aggressive products such as MTBE, alcohol, hexane, and naphtha
- Applications requiring primary or secondary foam wiper sealing