Natural rubber O-ring O-ring rubber ring (NR)

 - (CH2-C = CH-CH2)
 Two physical and chemical properties:
 Natural rubber O-ring O-ring rubber seal is made ​​by the hevea latex, polymer chemical called polyisoprene. Polyisoprene rubber can also be determined by its matrix monomers made of natural rubber O-ring O-ring rubber seal has many excellent physical properties: 0-100 ℃ when the rebound rate of up to 50% -80% rate of 1,000% longer God, pure rubber tensile strength of 17-25MPa, carbon black reinforced vulcanizates up to 25-35MPa, 500% modulus at 12MPa above, air tightness, infiltration parameters 2.969X1012H2 (S. Pa) -1 and SBR similar , the drawback is intolerant hydrogen type oil is not suitable for ultraviolet light, oxygen, ozone. But the poor weather resistance can be improved by special additives.
 Three temperature ranges:
 -50 ℃ ~ 70 ℃, (short time up to 100 ℃).
 Four hardness range:
 Shore A40 degrees to 90 degrees.
 Five colors:,
 Black, the color specified by the customer.
 Six applications:
 And use of natural rubber is very good, and can be used with many types of plastic. In the tire industry, natural rubber can be used to manufacture tread, carcass, sidewall and other parts, but also for the manufacture of inner tubes. Hose can be made of natural rubber, adhesive tape, general mechanical seals, sponge products, surgical supplies, latex products.