noncontact       
adjective (also non-contact) uk/ˌnɒnˈkɒn.tækt/ us/ˌnɑːnˈkɑːn.tækt/
 非接触式的
not involving physical contact
  The benefits of this treatment include its low cost, noncontact mode of therapy and the portability of the equipment. 
Players of non-contact sports often don't think about getting a mouthguard until it's too late. 非接触式运动的运动员通常不会考虑戴护齿器,直到为时已晚。 
 - More examples
 - People think of football as a noncontact game, but in fact, that's not the case at all.
 - The court ruling applied to golfers or those participating in other non-contact sports.
 - The majority of ACL tears are noncontact injuries.
 - In the past, girls were usually allocated noncontact positions on football teams.