High-Performance Sealing Systems

For linear, dynamic sealing applications

To achieve the best dynamic sealing performance, the following needs to be taken into consideration:

When the rod extends past the rod seal, a thin film of oil remains on the rod trapped in microscopic surface imperfections. The thickness of the oil film depends on the surface finish, rod seal and surface speed of the rod. During the return stroke, this thin film can be removed by an aggressive wiper lip, resulting in system leakage. Therefore, it is important to properly pair the wiper and the rod seal to minimize leakage and to achieve the best dynamic sealing performance. The properly selected sealing components comprise a sealing system.

High-Performance Rod Sealing System examples:

Features: Double lip wiper with straight wiper lip Long-life double lip rod seal Buffer seal Benefits: Driest rod sealing Best dirt removal Long service life

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Features: Double lip wiper with straight wiper lip Long-life rod seal Benefits: Dry rod sealing Best dirt removal Long service life

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Features: Single lip wiper with straight or beveled wiper lip Double lip, energized rod seal Benefits: Economic sealing system Good low and high pressure sealing Good dirt removal

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Features: Single lip wiper with beveled wiper lip Long-life double lip rod seal Benefits: Most economic sealing system Good high pressure sealing Good dirt removal Long service life

Application-Specific High-Performance Sealing Systems:

To provide the best sealing performance, the sealing system approach must be applied to all sealing applications, including servicing the following applications:

• Position Sensing Cylinders
• Truck Dump Cylinders
• Motion Converting Cylinders
• Shock Absorbing Cylinders
• Pressure Intensifying Cylinders
• Elevator Lift Cylinders
• Telescopic Cylinders
• Longwall Shield Cylinders
• Tunnel Boring Gripper Cylinders

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For your sealing application, please contact our engineers to help you in specifying a sealing system that’s best for your situation.

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Specific Seal Categories for Sealing Systems:

Wipers

Single lip wipers with straight or beveled wiper lip

Straight lips:

A9	W51	W51L	A8H

A26S	A2C	A25S	A3S

A31	A13	A20	A21

A22	A23

Beveled wiper lips:

A1	A1A	A2	A2A

A2B	A7	A26	A3

A25

Double lip wipers with straight wiper lip

A11	A15	A11C

Rod Seals

Long-life rod seals

S17	S17A	S1	S1A

S1B	S2	S2A	R52

R53

Long-life double lip rod seals:

S17	S17A	R52	R53

Double lip, energized rod seal:

S17B	R51	R50	S17C

S4

Buffer Seals

S92

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Contact us, request more information or call 1-800-283-7140 for immediate answers to your questions.

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*Pressure values are guidelines that depend on seal material, seal configuration, seal housing design, fluid or medium, operating temperatures, pressures, surface speed, and working environment. For maximum seal life expectancy, do not operate your seal beyond 75% of its operating limits.
For pressures exceeding 8000psi, please consult our engineers at engineering@ahpseals.com or call 1-800-283-7140 for advice.

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American High Performance Seals assumes no obligation or liability for any advice furnished, or results obtained with respect to these products. All such advice is given and accepted at the buyer’s risk. This information, based on our experience, is offered as part of our service to customers. It is intended for use by persons having technical skill, at their own discretion and risk. We do not guarantee favorable results, and we assume no liability in connection with its use.