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HS Hydraulic stem seals

HS-RBR


Description:

The RBR ring is a protective ring and is designed specifically for use as a the main seal together with seals with asymmetric edges (see RSA on page 1.3.1). The main function of this type is to maintain the working pressure of the auxiliary seal. RBR is not It has a full sealing effect, therefore, between the two seals, an oil cavity. Thanks to the special profile of the RBR ring, the growing pressure will come out into the space cylinder when certain values ​​are reached. The seal acts as a valve and also is designed to compensate peak pressure values.


Technical specifications:

Pressure: < 400 bar at +60В°C.

Speed: < 0,8 m/s.

Temperature: from -35В°C to +100В°C with a peak value of +110В°C.

Operating environment: hydraulic oil (see Table 1 on page 1.2.4).


Material:

Name: polyurethane (PU).

Addition: wear resistant polyurethane, resistant to hydrolysis.

Properties: has a high modulus of elasticity, low residual deformation and high abrasion resistance.

Hardness: Shore 93 В± 2. For the anti-extrusion ring, it is proposed to use polyacetal material (POM) with a high tensile strength.

Material code: CR.


Installation:

Installation is made in a closed landing groove. It is necessary to first place the seal of polyurethane, and then - to mount the anti-extrusion ring.


Description


Description:

The RBR ring is a protective ring and is designed specifically for use as a the main seal together with seals with asymmetric edges (see RSA on page 1.3.1). The main function of this type is to maintain the working pressure of the auxiliary seal. RBR is not It has a full sealing effect, therefore, between the two seals, an oil cavity. Thanks to the special profile of the RBR ring, the growing pressure will come out into the space cylinder when certain values ​​are reached. The seal acts as a valve and also is designed to compensate peak pressure values.


Technical specifications:

Pressure: < 400 bar at +60В°C.

Speed: < 0,8 m/s.

Temperature: from -35В°C to +100В°C with a peak value of +110В°C.

Operating environment: hydraulic oil (see Table 1 on page 1.2.4).


Material:

Name: polyurethane (PU).

Addition: wear resistant polyurethane, resistant to hydrolysis.

Properties: has a high modulus of elasticity, low residual deformation and high abrasion resistance.

Hardness: Shore 93 В± 2. For the anti-extrusion ring, it is proposed to use polyacetal material (POM) with a high tensile strength.

Material code: CR.


Installation:

Installation is made in a closed landing groove. It is necessary to first place the seal of polyurethane, and then - to mount the anti-extrusion ring.