A Seal O Ring creates a watertight seal between the two surfaces that need to be sealed. This helps to prevent leaks and protect parts from damage. It is made of rubber. The seal O-ring can also help to absorb vibration and shock. Its circular cross-section allows it to effectively seal both static and dynamic applications, accommodating both radial and axial movement.Attributes:• Manufactured with Rubber which gives excellent corrosion resistance• Manufactured to precise specifications and is built for durability and reliabilityApplications:A Seal O Ring prevents leaks by creating a watertight seal between the two surfaces and accomplishes this by being compressed between the surfaces, forming a seal that effectively blocks the passage of fluids in Brake Planetary Gear.