MH Type Rubber Coupling   
1. Made of high-grade cast iron material.   
2. Rubber material is NBR .

NBR Characteristics:

.  Excellent oil resistance, performance comparable to ACM and fluororubber.

Good wear resistance; heat resistance; aging resistance and airtightness.

Basic acid and alkali resistance.

Operating temperature: -40~+120 degrees. 

3. Outer diameter dimensions are: MH-50; MH-65; MH-80; MH-90; MH-115; MH-130; MH-145; MH175; MH-200; MH-230