High-quality Viton (FKM) Dowty washers specifically selected for rotary engines fitted with 1/2” primary stud kits. These bonded sealing washers are used on the primary studs to provide a reliable oil seal while maintaining consistent clamping force in high-temperature rotary environments.
The Viton sealing ring is bonded to a steel washer, preventing oil migration along the stud and offering excellent resistance to heat, oil, fuel, and aggressive chemicals—critical for long-term reliability in high-performance rotary builds.
Key Features
Type: Bonded Dowty washer
Material: Steel washer with Viton (FKM) seal
Stud Size: 1/2”
Application: Rotary engine primary studs
Quantity: 25 washers per kit
Use Case: Sealing and load distribution on high-stress fasteners
Ideal for performance street, track, drift, and drag rotary engines where oil control and durability are non-negotiable.
