One, Xu Mei Ke imports rubber ball - our outstanding advantages:
1. XOK - solid rubber ball workmanship fine, after special water grinding treatment, no mold line, no hair edge is very beautiful;
2. asmall seal XOK- rubber material: all of our rubber materials are imported.
3.XOK-Inventory: The existing rubber ball mold has 3.18MM 3.27MM 4MM 4.76MM 5MM 5.3MM 6MM 6.35MM 6.7MM 7MM 7.14MM 8MM 8.25MM 9MM 9.52MM 9.9MM 10.21MM 10.7MM 11MM 11.53MM 12.7MM;
4.XOK-Material hardness: rubber ball materials generally choose NBR, fluorine rubber, EPDM, silica gel, hardness in 50-90 degrees, can be customized according to customer requirements, basically no mold fees;
5. asmall sealed XOK- price: we can achieve low price in imported rubber balls.
Ding Qing rubber application:
Multi purpose materials are suitable for different industries, such as pneumatic and hydraulic applications and gas supply.
2. Brief Introduction of Rubber Material for Imported Rubber Balls
1) NBR butadiene rubber
NBR BUTADIENE-NITRILE rubber (NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-NBR-N Ding Qingjiao is one of the rubber materials commonly used in oil seals and imported O rings.
B. Rubber parts made of NBR, especially sealing parts, are widely used in fuel tank, lubricating oil tank, petroleum hydraulic oil, gasoline, water, silicone grease, silicone oil, diester lubricating oil, glycol hydraulic oil and other fluid media. It can be said that butadiene rubber is a widely used and low cost rubber seal.
Advantages of c.NBR NBR
1. oil resistant, water resistant, solvent resistant and high pressure resistant oils are excellent.                                               
2. good compression, wear resistance and elongation.
D. NBR disadvantages of butadiene rubber
It is not suitable for polar solvents such as ketones, ozone, nitro hydrocarbon and so on.
2) other rubber materials
Three yuan ethylene propylene rubber (EPDM), extreme high temperature 150 degrees, heat resistance, light and chemical, not oil resistant.        
Silicone material (SIL) - high temperature 250 degrees, low temperature -60 degrees, oil resistant general, not wear resistant.
Fluorinated rubber (FKM) - heat resistance 240 degrees, good oil resistance, wear resistance, chemical resistance and excellent tightness.            
- Polyurethane (PU) - 120 degrees heat resistance, oil resistance, high wear resistance; due to high hardness, generally not into O-ring.
• polytetrafluoroethylene (PTFE) - high temperature 280 degrees, good oil resistance.