WHAT IS EX 221 FUEL-RESISTANT WATERSTOP
EX 221 is a preformed adhesive waterstop designed to control the ingress and egress of hydrocarbons and other containing liquids at concrete joints. It is formulated with an NBR-based compound and solvent-resistant materials to provide reliable sealing in fuel-exposed environments.
Key Benefits
- Resistant to hydrocarbons and fuel exposure
- Bonds to a wide range of substrates
- Performs in wet conditions during installation
- No welding, wiring, or split forming required
- Maintains performance through wet/dry cycling
- Simple installation with consistent placement
Chemical Resistance (Summary)
- Designed to withstand exposure to common hydrocarbons:
- Gasoline, jet fuel, kerosene → slight swell
- Motor oil, diesel → no degradation
- Brake and transmission fluids → minimal effect
(Full chemical resistance data available upon request or in TDS)
Installation Overview
- Install in the center of the joint or within a keyway (if present)
- Press firmly onto clean concrete surface
- Butt ends tightly or splice with overlap
- Maintain minimum 2″ concrete coverage
- Remove release paper and pour concrete directly against material
Tips, Tricks & Guidance
- Designed for non-moving joints only
- Contact manufacturer for applications involving joint movement
Product Details
- Coverage: 100 ft per carton
- Packaging: 6 coils per carton
- Standard configuration: preformed strips
Need a Different Sealing Solution?
Standard joint sealing → Crete-Stik
Need water-activated expansion → Hydrophilic Waterstop
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Call (574) 264-9614