Belzona 2311
SR Elastomer
A fast-curing, abrasion resistant polyurethane elastomer for high speed emergency repairs, rebuilding and coating of rubber components and metal surfaces.
A fast-curing 2-part polyurethane resin in pocket-sized sachets for emergency rubber repairs with minimal downtime.
- SeriesBelzona 2000 Series
- Documents6
Overview of Belzona 2311
A 2-part polyurethane resin designed for a fast repair, rebuilding and coating of rubber and metal components. This flexible rubber repair material is designed for emergency and permanent applications where high build, durability, elasticity, high abrasion and tear resistance are required. This very fast cold-curing material is easy to mix and apply without the need for specialist tools and it cures at room temperature eliminating the need for hot work.
Key Benefits
Outstanding protection against wear, impact and abrasion
Rapid return to service after application
Pocket-sized sealed sachets for fast field deployment with no waste
Bonds to natural rubber, nitrile, neoprene, SBR, polyurethane, PVC, steel, copper and concrete
Outstanding resistance to a wide range of chemicals
Outstanding elongation enabling flexibility for moving and dynamic surfaces
Application Areas
What this product handles, grouped by equipment area — each links to the full application.
Engines & Casings
1 applicationFloor Problem Areas
1 applicationGaskets, Seals & Shims
1 applicationSolids Handling Machinery
1 applicationTechnical Data
Mechanical Properties (ASTM D412 Die C)
- Tensile Strength
- 1400 psi / 9.65 MPa
- Elongation
- 450%
- Shore A Hardness (ASTM D2240)
- 75
- Tear Strength (ASTM D624)
- 260 pli
- Compression Set (BS 903 part A6)
- 13%
Adhesion (ASTM D429 90° Peel)
- Mild Steel
- 119 pli / 2137 kg/m
- Natural Rubber (180° Peel)
- 14 pli / 250 kg/m (cohesive failure in substrate)
- Styrene-Butadiene (180° Peel)
- 14 pli / 250 kg/m (cohesive failure in substrate)
Abrasion Resistance (Taber ASTM D4060, 1kg load)
- Wet (H18 wheels at 70°F/21°C)
- 45 mm³ loss per 1000 cycles
- Dry (H18 wheels at 70°F/21°C)
- 109 mm³ loss per 1000 cycles
Electrical Properties
- Dielectric Strength (ASTM D149)
- 300 V/mil (12,000 V/mm)
Chemical Analysis
- Independently analysed for halogens, heavy metals and other corrosion-causing impurities. Heavy metals (Antimony, Arsenic, Bismuth, Cadmium, Lead, Tin, Silver, Mercury, Gallium, Indium)
- Not Detected (<3.0 ppm).
Working Life
- At 77°F (25°C)
- 2 minutes (very fast cure)
Curing Time
Allow to solidify for the times shown in the Belzona IFU before subjecting to the conditions indicated. The very fast cure makes this product ideal for emergency repairs where downtime must be minimized.
Service Temperature Limits
Note: Surface conditioning with Belzona 2911 (Elastomer QD Conditioner) or Belzona 2921 (Elastomer GP Conditioner) is required for proper adhesion.
- Service Range
- -40°F to 150°F (-40°C to 65°C)
Mixing & Application
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