Flexible mechanical coupling S-Flex
for boatsfor shipsfor shafts

flexible mechanical coupling
flexible mechanical coupling
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Application domain
for boats, for ships
for shafts
Other characteristics
anti-vibration, shaft-hub, non-lubricated, misalignment correction, compensating, low noise and vibration, maintenance-free, with high torsional flexibility, compact
torsionally flexible, elastomer, gear, curved-tooth gear


The reformulated S-Flex Endurance™ is the longest lasting and best performing EPDM product available on the market. The simple design of the S–Flex (flexible sleeve) coupling ensures ease of assembly and reliable performance. No special tools are needed for installation or removal. The S–Flex couplings can be used in a wide variety of applications. Continue to benefit from the characteristics of the S-Flex coupling but for 3 times longer! The new EPDM coupling sleeve element lasts at least 3 times as long as the previous design, saving you valuable downtime opportunity costs and maintenance costs. » Easy to Install » Maintenance Free » No Lubrication » Dampens Vibration and Controls Shock » Torsionally Soft » Double Engagement The new material also provides at least 30% increased torque rating and allows for product downsize in 50% of applications creating an average cost saving of 23 - 33% for sleeve element replacement. Extensive testing performed by the R&D department compared the new and improved EPDM S-Flex Endurance sleeve element material to the previous design and competitor’s similar style couplings. Ultimately the new EPDM S-Flex Endurance material met or exceeded performance in every testing category. Note the performance improvements are for the EPDM material only. The Neoprene and Hytrel® types remain unchanged. The S–Flex (flexible sleeve) coupling design is comprised of three parts. Two flanges with internal teeth engage an elastomeric flexible sleeve with external teeth. Each flange is attached to the respective shaft of the driver and driven and torque is transmitted across the flanges through the sleeve.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.