Seals


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Rod Seals

Hydraulic buffer rod seal Rubber PTFE HBTS Step seal RSJ

RSJ
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1.Application and properties

Suitable for single-acting rod seals, can be connected in series to withstand high pressure.
It has low friction coefficient and can work with or without lubrication, and can be used for oil-free lubrication cylinder seals. It is recommended to prioritize for servo cylinders requiring rapid response. It can be used for special conditions such as extremely high speed, extremely low speed, micro-stroke etc.  
The working medium adaptability and working temperature range can be changed by replacing the material of the O-ring.
The installation groove is small, which is beneficial to design the size of cylinder. The seal is easy to install and generally does not require special tools.
Compliant with GB/T 15242.1-94 and GB/T 15242.3-94 standards.
Products of different sections can be selected according to the size of the actual working pressure value, in principle, the greater the working pressure, the larger the cross-section should be selected

2.Standard material

Sealing ring: filled PTFE
O-Ring: NBR / FKM

3.Working Condition

Working Condition

Diameter Range

Pressure Range

Temperature

Range°C

Speed

Medium

4～1600mm

0～35MPa

-30～100(NBR),

-20～160(FKM)

1.5m/s

Hydraulic oil,

flame retardant liquid,

water, gas

 
Step seal

4. Related Dimensions：

R1=0.3～0.5; R2=0.1～0.2; R3=0.5～1; C=(0.5～0.7)L. The specific values are selected according to the section size of the seal. The remaining values are listed in the table below:

Rod Diameter d

Groove Dia.

Groove Width

Radial Clearance e

O-Ring

Cross-Section

Standard Application

Light Application

Heavy Duty Application

D

L

10

MPa

20

MPa

40

MPa

d1

3～7.9

8～18.9

—

d+4.9

2.2

0.3

0.20

0.15

1.78

8～18.9

19～37.9

—

d+7.3

3.2

0.4

0.25

0.15

2.62

19～37.9

38～199.9

8～18.9

d+10.7

4.2

0.4

0.25

0.20

3.53

38～199.9

200～255.9

19～37.9

d+15.1

6.3

0.5

0.30

0.20

5.33

200～255.9

256～649.9

38～199.9

d+20.5

8.1

0.6

0.35

0.25

6.99

256～649.9

650～999.9

200～255.9

d+24.0

8.1

0.6

0.35

0.25

6.99

650～999.9

≥1000.0

256～649.9

d+27.3

9.5

0.7

0.50

0.30

8.40

≥1000.0

—

650～999.9

d+38.0

13.8

1.0

0.70

0.60

12.0

 

5. Annotation method:

  Mark with Order No. listed in the Installation Dimensions table

6. Installation Dimensions:

Refer to GSJ. All of their sizes are the same