(JP8518585-X)      A vulcanisable rubber compsn. comprises a highly-satd. -nitrile copolymer rubber with an iodine value of is less than 80 (100 pts. wt.), reinforcing filler (3-30 pts. wt.), gp. II metal oxide (30-200 pts. wt.), non-reinforcing filler (30-200 pts. wt.) and vulcanising agent (0.1-20 pts. wt.).    USE -   The rubber compsn. may be used as sealing material(claimed) to make seals for application in dynamic state, partic. as parts in automobile and aeronautics industries and in the energy-related fields such as geothermal electricity generation. More specifically, the sealing material can be fabricated into reinforcing rings (claimed) as rotating and slipping seals (claimed), e.g. which are required to make contact with oils and gases, such as in rotary machines in which high-pressure sealing and slipperiness-resistant sealing are necessary.    Such rubber prods. are for use as seals of the following types: 0-rings, gaskets, blow-out preventers, pipe protectors, bearing seals, crankshaft seals etc.    ADVANTAGE -   Sealing material made with the rubber compsn. has a coefft. of friction of less than 1.5 and wear rate of 150-350 mg, in addition to resistance to ozone, heat and chemicals.    (US5852093-A)      A vulcanisable rubber compsn. comprises a highly-satd. -nitrile copolymer rubber with an iodine value of is less than 80 (100 pts. wt.), reinforcing filler (3-30 pts. wt.), gp. II metal oxide (30-200 pts. wt.), non-reinforcing filler (30-200 pts. wt.) and vulcanising agent (0.1-20 pts. wt.).    USE -   The rubber compsn. may be used as sealing material(claimed) to make seals for application in dynamic state, partic. as parts in automobile and aeronautics industries and in the energy-related fields such as geothermal electricity generation. More specifically, the sealing material can be fabricated into reinforcing rings (claimed) as rotating and slipping seals (claimed), e.g. which are required to make contact with oils and gases, such as in rotary machines in which high-pressure sealing and slipperiness-resistant sealing are necessary.    Such rubber prods. are for use as seals of the following types: 0-rings, gaskets, blow-out preventers, pipe protectors, bearing seals, crankshaft seals etc.    ADVANTAGE -   Sealing material made with the rubber compsn. has a coefft. of friction of less than 1.5 and wear rate of 150-350 mg, in addition to resistance to ozone, heat and chemicals.    (EP795580-B1)      A vulcanisable rubber compsn. comprises a highly-satd. -nitrile copolymer rubber with an iodine value of is less than 80 (100 pts. wt.), reinforcing filler (3-30 pts. wt.), gp. II metal oxide (30-200 pts. wt.), non-reinforcing filler (30-200 pts. wt.) and vulcanising agent (0.1-20 pts. wt.).    USE -   The rubber compsn. may be used as sealing material(claimed) to make seals for application in dynamic state, partic. as parts in automobile and aeronautics industries and in the energy-related fields such as geothermal electricity generation. More specifically, the sealing material can be fabricated into reinforcing rings (claimed) as rotating and slipping seals (claimed), e.g. which are required to make contact with oils and gases, such as in rotary machines in which high-pressure sealing and slipperiness-resistant sealing are necessary.    Such rubber prods. are for use as seals of the following types: 0-rings, gaskets, blow-out preventers, pipe protectors, bearing seals, crankshaft seals etc.    ADVANTAGE -   Sealing material made with the rubber compsn. has a coefft. of friction of less than 1.5 and wear rate of 150-350 mg, in addition to resistance to ozone, heat and chemicals.