1.Overview:

This test device is made according to the relevant standard of UL1082.

2.Specific requirements and specifications

A.Using the 10# steel rings the length is 38 mm.    

B. Using the grease rubber seal. 

C.Using the hollow natural rubber (CR) wall 0.8-2.4mm, the ball with the diameter ofφ54-φ60.   

D. Using 60 items sand to filled the inside.    

F.The total weight of the test ball is 136.1-163.3g.