Why do you need high pressure oil seals?
HIGH PRESSURE OIL SEALS The rotary shaft oil seal is an indispensable component in lubricated rotating equipment and must be chosen with caution in order to ensure that the correct design and materials are used to provide a long-lasting life for the rotating equipment.
What kind of pressure does a rotary shaft oil seal need?
Rotary shaft oil seal for extreme pressures: We can supply rotary shaft oil seals for applications with up to 100 BAR (10 MPa) pressure. Our profile GHH-BP has been tested to meet these standards.
When do oil seals need to be modified?
Oil seals should be designed or mml:modified to incorporate a flow through port if the difference between operating seal reference pressure and start-up pressure is greater than 1,375 kPa (200 psi). Oil seals and “O” rings are used in all hydraulic systems, pumps, pistons, pipe connections, etc.
Which is the best seal for oil retention?
A spring-energized lip is required for best oil retention, but not typically for grease retention. Oil seals are widely used as bearing seals and as rotary shaft seals for fast rotary motion under no or very low pressures (max. 7 psi/0.5bar pressure spikes)*.
When to use a high pressure oil seal?
Seals can be used from high vacuum to over 100,000 psi (combined with the appropriately designed back-up ring). Description: normally used in single acting applications and should be oriented with the spring cavity toward the pressure side.
A spring-energized lip is required for best oil retention, but not typically for grease retention. Oil seals are widely used as bearing seals and as rotary shaft seals for fast rotary motion under no or very low pressures (max. 7 psi/0.5bar pressure spikes)*.
What’s the surface speed of an oil seal?
Shaft Surface Speed: Up to 7,000 fpm (35m/s)* depending on shaft diameter and seal material Materials: NBR (Nitrile), FKM, Viton®, HNBR, EPDM, SIL, CR, ACM, VMQ, PTFE, low temperature and low-friction material grades.
What’s the purpose of grease seals and bearing seals?
Oil Seals, Grease Seals, Bearing Seals. The primary function of oil seals, grease seals and bearing seals is to retain the bearing lubricant and, secondarily, to enhance the performance and life of the bearing by minimizing dirt, oil and water ingress that results in damage and premature failure of the bearing and other components.