... force, navy. The product has advatages of light in weight, flexible, durable and no-leakage. It has tested by Shaanxi Rubber ... Φ320, Φ340, Φ360, Φ450mm, meanwhile, we can also design and manufacture in accordance with the user's need. 3> A single root ... coating nylon with PVC or CR, and have good performances in sealing, age-resistance, heat resistance and cold resistance, etc.. Heat insulation: ...