CVJ Boots

Seal and protect constant-velocity joints while reducing vehicle mass

Choose proven Silastic® brand silicone elastomers from Dow Corning for flexible, long-lasting CVJ boots that provide excellent sealing at all temperatures and help improve driveline reliability.

Silicone rubber CVJ boots can help:

• Deliver long-term sealing reliability to keep grease in and dust and dirt out.
• Reduce vehicle mass by eliminating heat shields on inboard joints near the engine.
• Extend constant-velocity joint life and reduce maintenance.
• Reduce component costs with custom compounds and processing options.

Silicones can extend joint reliability in advanced driveline design
CVJ boots, fabricated with Silastic silicone rubber:

• Remain flexible without leaking in searing heat and freezing cold.
• Withstand mechanical and chemical attack to provide severe-duty reliability.
• Resist deformation at high speeds and extreme joint angles.
• Provide superior sealing and aging performance over a wider temperature range than many organic rubbers can handle – from -40 to 200°C (-40 to 392°F).

Select Silastic brand elastomers for processing options
Meet your requirements for higher productivity, lower cost and special performance attributes with standard blends and custom compounds of:

• Proven silicone high consistency rubber (HCR) elastomers
• Liquid silicone rubber (LSR) elastomers for high-speed injection molding
• Fluorosilicone rubber (FSR) elastomers for resistance to fuels, oils and solvents
• Fluoro liquid silicone rubber (F-LSR) for fuel resistance with liquid process speeds

Molykote® brand grease on constant-velocity joints reduces wear and increases reliability.

Get the CVJ boot materials and support you need to help improve driveline reliability.

Technical resources Liquid Injection Molding: Processing Guide for Silastic® Liquid Silicone Rubber (LSR) and Silastic® Fluoro Liquid Silicone Rubber (F-LSR) (1 MB PDF) Fabricating with Silastic® High Consistency Rubber (PDF) 100% Fluoro Liquid Silicone Rubber: Fuel and Oil Resistance in an LSR (PDF) Innovation support See how our materials expertise and service support can help you overcome design, production and performance challenges and bring new products to market faster. Talk to Us Get a product suggestion Let us suggest products to meet your constant-velocity joint (CVJ) sealing needs. Product Suggestion Request a customized material Get the material properties and performance you require. Special Request See additional powertrain solutions In addition to specialty sealants, elastomers and lubricants, we also offer more material options for other powertrain applications. More Options