AOC Aliancys is the leading global supplier of polyester and vinyl ester resins, gelcoats and specialty materials used for the composites industry. With strong capabilities around the world in manufacturing and science, we deliver unrivaled quality, service and reliability for today, and are creating innovative solutions for tomorrow. Together with our customers, we are shaping the future of composites with new technology and applications.
As metallurgy advanced, so did the design of drill bits. The advent of iron and steel allowed for the creation of stronger and more durable drill bits that could withstand higher levels of torque and pressure. These early metal drill bits were typically made with a single cutting edge and were mounted on a wooden handle.
A wide range of sealing devices are used in various machines.
Sealing devices serve the following functions:
Advantages of Rubber Valve Cover Gaskets
Successful assembly first requires careful preparation. By following a few simple steps, you significantly increase the chances of a flawless assembly.

Shaft and Bore Tolerance
Choosing Quality Auto Parts Oil Seals:

wheel oil seal. Signs of a faulty wheel oil seal include oil leakage from the wheel hub, unusual noise coming from the wheel assembly, and excessive play or wobbling of the wheel. If any of these symptoms are noticed, it is important to have the wheel oil seals replaced immediately to prevent further damage to the wheel bearings.
The mechanical seal is used in a pump, mixer and other mechanical engineering scenarios to contain the fluid within a vessel where a shaft rotates through a stationary (or rotating) housing.
Friction damper


Whether the seal is a standard product or a custom solution, our engineers ensure that the seal is specified for your application.



To diagnose potential problems with the ignition spark plug, there are a few signs to look out for. These include difficulty starting the engine, decreased fuel efficiency, and engine misfires. If you notice any of these symptoms, it is important to have your spark plug inspected and replaced if necessary.
Helix Seal