Product Name
DEVCON R-Flex Belt Repair Kit
Brief Description
DEVCON R-Flex is a self-leveling liquid urethane that quickly transforms into a non-sag putty, specifically formulated for the rapid and durable repair of gouges, tears, and holes in heavy-weight SBR (Styrene-Butadiene Rubber) conveyor belts. It also serves to protect belt clips and splices.
Popular Applications & Uses
- Repairing holes, gouges, and tears in SBR conveyor belts.- Protecting hinged or solid plate fastener systems from damage caused by scrapers and pulleys.- Rebuilding worn rubber top plies of SBR belts to shield surfaces from abrasion and impact from aggregate.- Performing emergency conveyor belt repairs to significantly minimize operational downtime.
Industries that Commonly Use It
- General Manufacturing- Energy (e.g., mining, power generation)- Construction/Building Services (e.g., aggregate, cement industries)- Logistics (for large-scale material handling and distribution centers)
Special and Unique Features
- Offers high adhesion to SBR belts, creating a strong “surface pull” to the polymer.- Starts as a self-leveling liquid and quickly develops into a non-sag putty for versatile application.- Features rapid curing, allowing repaired belts to be back in service in just 90 minutes (1.5 hours).- Provides excellent flexibility and superior abrasion resistance for long-lasting repairs.- Utilizes a cold vulcanization method, eliminating the need for heat or presses during application.- Can be applied to vertical surfaces without sagging after just 3 minutes of mixing.
Key Properties
- Color: Black- Cure Hardness: 87 Shore A- Tensile Strength: 1,460 pli (255.7 N/mm)- Tear Resistance: 375 pli (65.7 N/mm)- Maximum Elongation: 420%- Abrasion Resistance: 270 mg loss per 1,000 rev (H18, 1000g, 1000rev)- Functional Cure: 90 minutes (1.5 hours)- Pot Life @ 73°F (23°C): 1-4 min (semi-liquid), 4-10 min (self-level non-sag gel)- Maximum Operating Temperature: Dry: 180°F (80°C); Wet: 120°F (50°C)- Mix Ratio: 88 resin: 12 curing agent (by weight)
Surface Compatibility
- Primarily designed for Styrene-Butadiene Rubber (SBR) conveyor belts.- Compatible with metal surfaces (e.g., belt clips/fasteners) when used with an appropriate primer like Devcon FL-10 Metal Primer.
Known backups / known substitutes
- Hot vulcanization methods, which typically require heat, pressure, and result in longer downtime.- Mechanical splices, often used for quick fixes but generally outlived by vulcanized joints.- Other cold vulcanizing solutions and cements, such as Chemvulc's CV2002 or CV4000, TRS cold adhesive, Eli-Flex, and Thejo's TEZ cold adhesives.- Rubber repair strips and patches with CN bonding layers, like Reglin Conveyor Belt Repair Materials or Oliver Rubber Industries' Self Vulcanizing Strips/patches.- Other urethane-based rubber repair products with fast set times.- Devcon Flexane products, including Flexane Brushable and Flexane High Performance Putty.
Comparison Note
DEVCON R-Flex offers a significantly faster functional cure time of 90 minutes compared to traditional hot vulcanization or many other cold vulcanization methods, which can require several hours or even a full day. This product provides a durable, flexible, and abrasion-resistant repair without the need for specialized heating equipment, making it an ideal solution for on-site emergency repairs and effectively reducing operational downtime. Its unique self-leveling yet non-sagging property ensures versatile application across various types of belt damage.
