Qingdao Ruichen Sealing Technology Co., Ltd.
Qingdao Ruichen Sealing Technology Co., Ltd.
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RC11 Hydraulic Seal Explained: Design, Features, Materials and Operating Conditions

2026-08-05 0 Leave me a message

The RC11 consists of a filled-PTFE stepped sealing ring and a rubber O-ring; it is designed for single-acting pressure sealing in hydraulic reciprocating applications. The RC11-B consists of a filled-PTFE rectangular sealing ring and a rubber O-ring; it is designed for double-acting pressure sealing in hydraulic reciprocating applications. The O-ring provides radial preload and compensates for wear on the sealing ring. It is generally used in conjunction with a guide ring. For rod diameters smaller than 30 mm, a split (open) groove design should be used.

 

RC11

 

Product Features

1. Low friction, low breakaway force, smooth operation, equal static and dynamic friction, and no stick-slip;

2. Excellent pressure stability under high-pressure and demanding operating conditions;

3. Long service life; suitable for oil-free sealing applications;

4. Suitable for sealing low-viscosity media, such as water.

 

Applicable operating conditions (limiting values should not occur simultaneously)

Pressure (MPa)

Temperature (°C)

Speed (m/s)

Medium

≤60

+35 to +100 (with NBR O-ring)

≤6

Mineral-based hydraulic oil, fire-resistant fluids (HFA/HFB), water, etc.

-20 to +200 (with FKM O-ring)

 

Material Selection

1. Compatible O-ring materials include: R01 Nitrile Rubber (NBR), R02 Fluororubber (FKM), etc.

2. Sealing ring materials: PTFE2, PTFE3, PTFE4, PU, etc.

 

Ordering Examples

Order Model: RC11—40x55.1x6.3—PTFE3—R01

Order Model: RC11-B—40x55.1x6.3—PTFE3—R02

Model - Rod Diameter x Groove Diameter x Groove Width; PTFE3 – Modified PTFE material code; R01, R02 – O-ring material codes.


Ordering Examples


Application

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