Rubber Material for Intake

Does anyone know what rubber material 1678 and 254 use to put over their intake rollers? If not what would be some of the better materials to use for intake this year?

I think they use urethane rollers, but maybe ask someone from that team to be sure. 701’s intake this year is using a series of banebot wheels.

I will be making a video about this very topic tomorrow during our team meeting.

We have used urethane in the past.

Abrasion-Resistant Polyurethane Rubber Tubes slipped over a 1/2 hex.