Sterling Instrument now offers a series of slit type plastic couplings that are inexpensive, UV resistant with voltage and RF isolation. The S50TLS inch and metric series are stocked in sizes 13, 19 and 25. The plastic couplings replace stainless or aluminum slit type couplings for improved operation. Windup or backlash and derating for reversing applications are not an issue for the S50TLS. A metal screw-to-metal nut design that doesn't use threads cut into a molded piece to ensure a snug fit between the shaft and coupling.

The slit type plastic couplings feature stainless steel fasteners. The bore sizes range from 0.125 to 0.500 inches (3 to 12 mm) while length starts at 0.710 to 1.400 inches (18 to 36 mm), and temperature ranges from -4 to +284 degrees Fahrenheit (-20 to 140 degrees Celsius). They accommodate applications with tight or skewed connections.