Gilsonite for rubber is using by mixing with carbon black by this way the final product that would be Rubber would be more reinforced Rubber.
The advantage of using Gilsonite in Rubber is absorbing Carbon black in entire of the rubber and better mixing with other items those are using for making the Rubber.
By using Gilsonite the quantity of carbon of the rubber would be very higher and the rubber strength against the abrasion would be very higher.
By using Gilsonite in producing the rubber the final products would be more natural and costs would very lower.