DSJR PTFE Rod Step Seal with NBR Seal and FKM O Ring
DSJR
Quantity:
1. Application and properties
Suitable for single-acting sealing of hydraulic reciprocating rod, and has good sealing performance at high, medium and low pressure. Its working pressure range is broad, even it can be used for high-pressure and ultra-high-pressure seal. It can be installed in series in the same direction to increase pressure bearing capacity.
Low friction coefficient and it can work with or without lubrication. Good wear resistance and long serve life.
The working medium of the sealing sleeve is widely adaptable,
Operatign temperature range from -30°C to +160°C(depending on the O-Ring). It can be used for special conditions such as extremely high speed, extremely low speed, micro-stroke etc.
The groove is open and the biggest feature is small leakage and long life.
2. Standard Material:
Sealing ring: filled PTFE
O-Ring: NBR / FKM
3. Working conditions
Working Conditions | ||||
Diameter Range | Pressure Range | Temperature Range°C | Speed | Medium |
5～2000mm | 0～60MPa | -30～100(NBR) -20～160(FKM) | 1.5m/s | High and low temperature oil water, Steam and other fluids |
4. Related Dimensions
R1=0.2～0.5; R2=0.1～0.2; R3=0.3～0.5; C=(0.7～1.0)L; The specific values are selected according to the section size of the seal. The remaining values are listed in the table below:
| Rod | Groove | Groove | Ring | Radial | O-Ring | |||
| Diameter d | Diameter | Width | width | Clearance e | Cross-Section | |||
| Standard | Light | Heavy Duty | D | L | H | <20MPa | <60MPa | d1 |
| Application | Application | Application | ||||||
| - | 5～17.9 | - | d+3.6 | 4.7 | 4.2 | 0.2 | 0.15 | 1.8 |
| 5～17.9 | 18～39.9 | - | d+5.2 | 6.1 | 5.5 | 0.25 | 0.15 | 2.65 |
| 18～39.9 | 40～99.9 | 5～17.9 | d+6.8 | 8 | 7 | 0.25 | 0.2 | 3.55 |
| 40～99.9 | 100～629.9 | 18～39.9 | d+10.2 | 11.2 | 10 | 0.3 | 0.2 | 5.3 |
| 100～629.9 | 630～1000 | 40～99.9 | d+13.4 | 14.2 | 12.7 | 0.35 | 0.25 | 6.99 |
| 630～1000 | - | 100～629.9 | d+16.0 | 16.2 | 14.5 | 0.5 | 0.3 | 8.6 |
| - | - | 630～1000 | d+18.8 | 18.6 | 16.8 | 0.6 | 0.4 | 10 |
5. Marking method
Mark it with the dimension of installation groove as below：
DSJR “Rod Diameter d” × “Groove Diameter D” × “Groove Width L”
For example：DSJR 100×113.4×14.2 means “Rod triangular seal/triangular Rod seal , groove dimension: Rod Dia. 100, Groove Dia. 113.4, groove width 14.2.G
