Fluoropolymer lips allow you to make automotive bonded seals that help keep your engine running.
Radial shaft seals are used to seal rotary engine or transmission components. Different shaft seal designs exist based on fluoroelastomer or PTFE lips. Some seal designs include an additional sealing lip to protect the primary sealing area from dust and debris. Automotive shaft seals (e.g. crankshaft and camshaft seals) in particular require ultimate durability under harsh conditions to last a car‘s lifetime. Aggressive lubricants from the engine side plus the protection of the system from outside dirt and dust result in one of the most demanding sealing applications. The 3M™ Dyneon™ portfolio includes products that enable design engineers to develop state-of-the-art sealing solutions for today‘s demanding applications. Our products for shaft seals provide good processability and superior metal bonding properties.
Valve stem seals need to perform around oscillating parts, ensuring adequate lubrication of the valve without negatively impacting the engine's emissions. 3M™ Dyneon™ Fluoropolymers offer resistance to high temperatures and today's aggressive engine oils and blow-by gases. Optimized sealing and wear behavior make them the first choice for valve stem seal applications.
The design of shock absorber seals depends on the system. In traditional oil-filled systems, shaft seals completely made of rubber are standard. In modern systems where a mixture of oil and pressurized gas is used, metal-bonded seals with check valves to control the pressure are the norm. 3M™ Dyneon™ PTFE grades provide optimal sealing capability to prevent leakages of oil and gas used in the shock absorber. 3M™ Dyneon™ Fluoroelastomers are used in high performance shaft seals for e.g. trucks.