Elastomers are generally composed of engineering plastics or rubber. The life of the coupling is also the life of the elastomer. Since the elastomer is compressed, it is not easily pulled. Generally, the life of the elastomer is 10 years. Since the elastomer has the function of damping and damping, it is used in a strong vibration. The performance limit temperature of the elastomer determines the operating temperature of the coupling, which is generally -35 to +80 degrees.

The plum coupling is a commonly used coupling, also known as a claw coupling, which consists of two metal jaws and an elastomer. The two metal jaws are typically 45 gauge steel, but are also useful for aluminum alloys where load sensitivity is required.