... woven by knitting round loom,and is coated with PTFE emulsion.The seamless belt completely overcomes the problems of jointed ... , long service life. Disadvantages: High prices.2, Jointed fusing machine belt: usually with black color, jointed with F46 film. Advantages ... service life of usually 3 months.3, double-layer fusing machine belt: Advantages: High strength, long service life, without deviation. ...