Reduce weight, add flexibility to rack and pinion boots with Santoprene™ TPV

Two automotive rack and pinion boots made from Santoprene TPV, on light blue background

Rack and pinion steering boot suppliers around the world rely on Santoprene thermoplastic vulcanizates (TPVs) as tough, chemical- and grease-resistant materials that maintain their flexibility across a wide range of extreme temperatures and road conditions.

Other key Santoprene TPV properties valued by boot manufacturers include:

  • Low weight and tight dimensional tolerances
  • Outstanding sealability
  • Excellent flex fatigue
  • Processing ease and recyclability

Durability and safety
Combining properties similar to conventional thermoset rubber with the processing speed, efficiency and economy of a thermoplastic, Santoprene™ TPV grades 101-87 and 103-40 are suitable for injection, extrusion and blow molding.

Temperature and chemical resistance
These grades meet or exceed worldwide OEM sealing requirements for rack and pinion boots, and are designed to operate in temperatures from -40°C to 135°C (-40°F to 275°F). They help protect safety-critical steering components by being chemically resistant to automotive fluids, detergents, cleaning agents and road salts. See the online TPV Fluid Resistance Guide.