Sealing body for dynamic applications

Abstract

A sealing body is for dynamic applications. The sealing body includes an elastomer material including epichlorohydrin rubber (ECO) as a rubber; and carbon nanotubes distributed in the elastomer material in an amount in a range from 0.4 to 10 phr, based on 100 parts by weight of rubber. The body has a Shore A hardness of in a range from 60 to 100.

1 . A sealing body for dynamic applications, the body comprising:
 an elastomer material comprising epichlorohydrin rubber (ECO) as a rubber; and   carbon nanotubes distributed in the elastomer material in an amount in a range from 0.4 to 10 phr, based on 100 parts by weight of rubber,   wherein the body has a Shore A hardness of in a range from 60 to 100.   
     
     
         2 . The body of  claim 1 , the body having a coefficient of friction of less than 1.5μ. 
     
     
         3 . The body of  claim 1 , wherein the body has a coefficient of friction of less than μ=1, as measured in accordance with DIN ISO 15113. 
     
     
         4 . The body of  claim 1 , the body having a specific electrical volume resistance of <10 6  (Ω×cm 2 )/cm, as measured in accordance with DIN IEC 60093. 
     
     
         5 . The body of  claim 1 , configured as a static seal for dynamic application. 
     
     
         6 . The body of  claim 1 , having a scattered distribution of the carbon nanotubes in the elastomer material. 
     
     
         7 . The body of  claim 1 , wherein the elastomer material comprises a blend or mixture of the ECO with a thermoplastic material. 
     
     
         8 . The body of  claim 1 , wherein the body has a Shore hardness of >80 Shore. 
     
     
         9 . The body of  claim 1 , wherein the elastomer material comprises the ECO or a blend or mixture thereof with a thermoplastic material, and
 wherein the abrasion volume of the elastomer material is <120 mm 3 , as measured in accordance with DIN ISO 4649.   
     
     
         10 . A method for producing the body of  claim 1 , the method comprising:
 incorporating carbon nanotubes into an elastomer material comprising ECO in a mixing unit to form a non-cross-linked elastomer mixture; and   molding and cross-linking to form the sealing body.   
     
     
         11 . The body of  claim 1 , having a scattered and a uniform distribution of the carbon nanotubes in the elastomer material. 
     
     
         12 . The body of  claim 11 , configured as a shock absorber seal, radial shaft sealing ring, cassette seal, grooved ring seal, lip sealing ring, valve stem seal, rod seal, piston seal, membrane, bellows, hydraulic seal, actuator for valve application, D-ring, or X ring, for dynamic application. 
     
     
         13 . A method of sealing an object, the method comprising contacting the body of  claim 1  to the object, thereby sealing the object in a dynamic manner. 
     
     
         14 . The body of  claim 1 , the body having a specific surface resistance of <10 6  (Ω×cm 2 )/cm, as measured in accordance with DIN IEC 60093. 
     
     
         15 . The body of  claim 1 , the body having a specific electrical volume resistance and a specific surface resistance of <10 6  (Ω×cm 2 )/cm, as measured in accordance with DIN IEC 60093. 
     
     
         16 . The body of  claim 1 , having a uniform distribution of the carbon nanotubes in the elastomer material. 
     
     
         17 . The body of  claim 1 , the body being configured as a shock absorber seal, wherein the carbon nanotubes are distributed in the elastomer material in an amount in a range of from 0.5 to 7 phr, based on 100 parts by weight of rubber. 
     
     
         18 . The body of  claim 17 , wherein the shock absorber seal has the Shore A hardness in a range from 70 to 90. 
     
     
         19 . The body from  claim 17 , wherein the shock absorber seal has the Shore A hardness in a range from 75 to 95.