Symmetric Seals

Products

Symmetric Seals for Hydraulic and Pneumatic Applications

Symmetric seals, also known as bi-directional seals, are designed to function effectively regardless of the direction of pressure or movement. This makes them versatile and simplifies installation in hydraulic and pneumatic systems. Their symmetrical design allows them to seal equally well whether pressure is applied from one side or the other, or if the component they are sealing moves back and forth.

Types of Symmetric Seals

U-Cups/U-Rings

Many U-cup designs are inherently symmetric.

Compact Seals

Some compact seal designs offer symmetric sealing.

Specialized Lip Seals

Lip seals with specific lip profiles designed for symmetric sealing.

O-Rings

Can function as symmetric seals in certain applications.

Nitrile Rubber (NBR)

A common and cost-effective choice for general-purpose applications.

Viton (FKM)

For higher temperature and chemically aggressive environments.

Polyurethane (PU)

For applications requiring good abrasion and tear resistance.

Silicone

For applications requiring flexibility and temperature resistance.

PTFE (Teflon)

For low friction and chemical inertness.

Applications

Symmetric Seals seals are essential in a wide range of hydraulic and pneumatic systems

Hydraulic Cylinders

Especially in double-acting cylinders where pressure is applied to both sides of the piston.

Pneumatic Actuators

In systems with reciprocating or oscillating motion.

Valves

Where sealing is required in both directions.

Key Features and Benefits

Bi-Directional Sealing

Seals effectively in both directions, simplifying design and installation.

Versatility

Suitable for a wide range of applications with reciprocating or oscillating motion.

Simplified Installation

No need to worry about seal orientation during installation.

Reduced Inventory

One seal can often replace two different seals (one for each direction) in some applications.