High pressure seals for piston holes are excellent, consisting of PTFE or special composite material special-shaped sealing rings and high elastic O-shaped rubber rings. According to the matching O-rings, they are divided into RC58 - RC64 series (adapted to GB1235), which are specially used for hydraulic reciprocating motion one-way sealing.
PTFE material has strong chemical stability, acid and alkali corrosion resistance, and adapts to complex chemical environments. The sealing ring and rubber ring work together to achieve excellent sealing effect.
In marine engineering, high pressure seals for piston holes can provide key protection for the hydraulic system of deep-sea detectors. The deep-sea water pressure is high and the seawater is highly corrosive. The material advantage is one of the prerequisites for the product to provide high pressure resistance and corrosion resistance.
In heavy machinery manufacturing, large crane hydraulic telescopic arms benefit a lot. The construction site is complex, the telescopic arms move frequently, and the pressure varies. PTFE material is wear-resistant, combined with a thin lip design, real-time compensation for wear, tight sealing, and reduced failure risks.
In the field of new energy vehicles, high pressure seals for piston holes are also critical. In EPS hydraulic components, the material is stable and can accurately seal in the face of hydraulic oil erosion and temperature changes; in the brake system, for high-pressure impact and brake fluid corrosion, the special structure and optimized thickness sealing ring strictly prevent leakage and ensure safety.
The high-pressure seals for piston holes we produce have some models with thin lip design with good compensation and excellent sealing. They are well optimized for water pressure and low-viscosity media. The special structure is resistant to high pressure and has excellent material quality. It is the best choice for opening efficient sealing.
Product features:
1. Low friction, small starting resistance, smooth movement, equal dynamic and static friction, no creeping;
2. Long life, can be used for oil-free lubrication seals;
3. Can be used for sealing of high pressure, ultra-high pressure, water and other low viscosity media;
4. Can be used for sealing of water and other low viscosity media
Material selection
1. The materials for the O-rings are: R01 nitrile rubber (NBR), R02 fluororubber (FKM), etc.
2. Sealing ring materials: standard material PTFE3, other optional materials PTFE1, PTFE2, PTFE4, composite thermoplastic materials.
| Applicable working conditions of high pressure seals for piston holes (limit values should not appear at the same time) | |||||
| Profile | Model |
Pressure (MPa) |
Temperature (℃) | Speed (m/s) | Media |
 |
RC51/RC52 | ≤70 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), gas, etc. |
| -20~+180(matching O-ring FKM) | |||||
 |
RC53/RC54 | ≤100 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), gas, etc. |
| -20~+180(matching O-ring FKM) | |||||
 |
RC55 | ≤200 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), water, etc. |
| -20~+180(matching O-ring FKM) | |||||
 |
RC56/RC57 | ≤100 | 35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), gas, etc. |
| -20~+180(matching O-ring FKM) | |||||
 |
RC58/RC59 | ≤200 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), water, etc. |
| -20~+200(matching O-ring FKM) | |||||
 |
RC60 | ≤260 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), water, etc. |
| -20~+200(matching O-ring FKM) | |||||
 |
RC61 | ≤60 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), water, etc. |
| -20~+200(matching O-ring FKM) | |||||
 |
RC61-B | ≤60 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), water, etc. |
| -20~+200(matching O-ring FKM) | |||||
 |
RC62 | ≤60 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), water, etc. |
| -20~+200(matching O-ring FKM) | |||||
 |
RC63/SPGC | ≤20 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), gas, etc. |
| -20~+180(matching O-ring FKM) | |||||
 |
RC64 | ≤20 | -35~+100(matching O-ring NBR) | ≤6 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), gas, etc. |
| -20~+180(matching O-ring FKM) | |||||
 |
OK | ≤50 | -35~+110(matching O-ring NBR) | ≤1 | Mineral-based hydraulic oil, flame retardant fluid (HFA/HFB), etc. |
Ordering example:
Order model RC51-80x70x7.6-PTFE3-R01
Model-cylinder diameter x groove diameter x groove width PTFE3-modified PTFE material code R01 O-ring material code
Order model RC53-80x69.6x9.8-PTFE3 -R01
Model-cylinder diameter x groove diameter x groove width PTFE3-modified PTFE material code R01- O-ring material code
Order model RC55-80x69.4x10.6-PTFE3-R01
Model-cylinder diameter x groove diameter x groove width PTFE3-modified PTFE material code R01- O-ring material code
Order model RC56-80x70x9.2-PTFE3 -R01
Model-cylinder diameter x groove diameter x groove width PTFE3-modified PTFE material code R01- O-ring material code
Order model OK-80x59x8 Cylinder diameter x groove diameter x groove width
Specifications
RC51 Specification parameter table (any specifications within the parameter range are available)|
Standard type DH9 RC51 |
Light load DH9 RC51-Q |
Heavy load DH9 RC51-Z |
Groove diameter d h9 |
Groove width L+0.2 |
Seal height L1 | Radial clearance Smax |
Chamfer Zmin |
O-ring wire diameter d0 |
|
| <20MPA | <40MPA | ||||||||
| 8~12 | 12.9~23.9 | - | D-3.5 | 3.2 | 2.8 | 0.2 | 0.15 | 3 | 1.8 |
| 12.9~23.9 | 24~49.9 | - | D-5.3 | 4.2 | 3.8 | 0.25 | 0.15 | 4 | 2.65 |
| 24~49.9 | 50~121.9 | 12.9~23.9 | D-6.8 | 5.2 | 4.7 | 0.25 | 0.2 | 5 | 3.55 |
| 50~121.9 | 122~690.9 | 24~49.9 | D-10.0 | 7.6 | 7 | 0.3 | 0.2 | 7 | 5.30 |
| 122~690.9 | 691~999 | 50~121.9 | D-13.0 | 9.6 | 8.8 | 0.35 | 0.25 | 10 | 7.00 |
| 691~999 | 1000~1599 | 122~690.9 | D-15.9 | 11.6 | 10.5 | 0.5 | 0.3 | 12 | 8.6 |
| 1000~1599 | ≥1600 | 691~999 | D-17.8 | 14.8 | 13.5 | 0.6 | 0.4 | 15 | 10.0 |
| ≥1600 | - | 1000~1599 | D-21.2 | 17.8 | 16.3 | 0.7 | 0.6 | 20 | 12.0 |
| Note: 1. It is easier to install in closed grooves >30mm using the light load series. | |||||||||
| 2. Please consult our company for closed groove installation. | |||||||||
| 3. For pressure >40MPA, the root area of the seal uses H8/f8 fit tolerance. | |||||||||
| RC52 (matching O-ring GB1235) Specifications (any specifications within the parameter range are available) | ||||||
|
Aperture range D H9 |
Groove diameter d h9 |
Groove width L+0.2 |
Seal height L1 |
Radial clearance Smax |
Chamfer Zmin |
O-ring wire diameter d0 |
| 12~55 | D-6.8 | 5.2 | 4.7 | 0.3 | 5 | 3.5 |
| 56~169 | D-10.8 | 8.2 | 7.5 | 0.4 | 7 | 5.7 |
| 170~1500 | D-15.9 | 11.6 | 10.5 | 0.4 | 12 | 8.6 |
| Ordering example RC52—80X69.2X8.2-PTFE3-R01 | ||||||
| Model-cylinder diameter x groove diameter x groove width PTFE3- modified PTFE material code R01- O-ring material code | ||||||
| RC53 Specifications (Any specifications within the parameter range are available) | ||||||
|
Aperture range D H9 |
Groove diameter d h9 |
Groove width L+0.2 |
Radial clearance Smax |
Chamfer Zmin |
O-ring wire diameter dO |
|
| <40Mpa | <60Mpa | |||||
| 13~24 | D-5.4 | 5.2 | 0.25 | 0.15 | 4 | 2.65 |
| 25~49 | D-7.2 | 6.6 | 0.25 | 0.2 | 5 | 3.55 |
| 50~121 | D-10.4 | 9.8 | 0.3 | 0.2 | 7 | 5.30 |
| 122~1500 | D-13.6 | 12.8 | 0.35 | 0.25 | 10 | 7.00 |
| RC54 Specifications (matching O-ring GB1235) (Any specifications within the parameter range are available) | ||||||
| Aperture range D H9 | Groove diameter d h9 | Groove width L+0.2 | Radial clearance Smax | Chamfer Zmin | O-ring wire diameter dO | |
| <40Mpa | <60Mpa | |||||
| 12~49 | D-7.0 | 6.6 | 0.25 | 0.2 | 5 | 3.5 |
| 50~169 | D-11.0 | 10.5 | 0.3 | 0.2 | 7 | 5.7 |
| 170~1500 | D-16.6 | 15.5 | 0.5 | 0.3 | 12 | 8.6 |
| Note: For pressure > 60MPA, the seal root area uses H8/f8 fit tolerance, and the ultra-high pressure seal Smax < 0.05. | ||||||
| Aperture range D H9 | Groove diameter d h9 | Groove width L+0.2 | Radial clearance Smax | Chamfer Zmin | O-ring wire diameter dO | |
| <40Mpa | <60Mpa | |||||
| 12~49 | D-7.2 | 8.6 | 0.25 | 0.2 | 5 | 3.55 |
| 50~121 | D-10.6 | 10.6 | 0.3 | 0.2 | 7 | 5.3 |
| 122~1500 | D-14 | 13.8 | 0.5 | 0.3 | 8 | 7 |
| Note: For pressure > 60MPA, the seal root area uses H8/f8 fit tolerance, and the ultra-high pressure seal Smax < 0.05. | ||||||
| RC56 Specifications (Any specifications within the parameter range are available) | ||||||||||
|
Standard type DH9 RC56 |
Light load DH9 RC56-Q |
Heavy load DH9 RC56-Z |
Groove diameter d h9 |
Groove width L+0.2 |
Seal height L1 |
Rounded Corners Rmax |
Radial clearance Smax |
Chamfer Zmin |
O-ring wire diameter dO | |
| <20MPA | <40MPA | |||||||||
| 8~12.9 | 13~23.9 | -- | D-3.8 | 4 | 3.6 | 0.3 | 0.2 | 0.15 | 3 | 1.8 |
| 13~23.9 | 24~49.9 | 8~12.9 | D-5.2 | 4.7 | 4.3 | 0.4 | 0.25 | 0.2 | 4 | 2.65 |
| 24~49.9 | 50~121.9 | 13~23.9 | D-6.8 | 6.2 | 5.6 | 0.4 | 0.3 | 0.2 | 5 | 3.55 |
| 50~121.9 | 122~629 | 24~49.9 | D-10.0 | 9.2 | 8.5 | 0.5 | 0.35 | 0.25 | 7 | 5.3 |
| 122~629 | 630~999 | 50~121.9 | D-13.0 | 12.3 | 10.6 | 0.6 | 0.35 | 0.25 | 10 | 7.00 |
| 630~999 | 1000~1599 | 122~629 | D-16 | 13.6 | 12 | 0.7 | 0.5 | 0.3 | 12 | 8.6 |
| 1000~1599 | ≥1600 | 630~999 | D-18.5 | 16 | 14.5 | 0.8 | 0.6 | 0.4 | 15 | 10.0 |
| ≥1600 | -- | 1000~1599 | D-22 | 19 | 17 | 1.0 | 0.7 | 0.6 | 20 | 12.0 |
| Note: 1. For pressures > 60MPA, the seal root area uses H8/f8 matching tolerance, and the ultra-high pressure seal Smax < 0.05. 2. For cylinder diameters > 30mm, it can be installed in closed grooves. Please consult our company. | ||||||||||
| RC57 Specifications (matching O-ring GB1235) (Any specifications within the parameter range are available) | ||||||||
| Aperture range D H9 | Groove diameter d h9 | Groove width L+0.2 | Seal height L1 | Round Corners Rmax | Radial clearance Smax | Chamfer Zmin | O-ring wire diameter dO | |
| <20MPA | <40MPA | |||||||
| 8~27 | D-4.6 | 4.5 | 4 | 0.4 | 0.25 | 0.15 | 4 | 2.4 |
| 28~55 | D-6.8 | 6.2 | 5.6 | 0.4 | 0.25 | 0.2 | 5 | 3.5 |
| 56~169 | D-10.8 | 9.8 | 8.9 | 0.5 | 0.3 | 0.2 | 8 | 5.7 |
| 170~1500 | D-16.0 | 13.6 | 12 | 0.7 | 0.5 | 0.3 | 12 | 8.6 |
| Ordering example RC57—80x69.2x9.8-PTFE3-R01 | ||||||||
| Model-cylinder diameter x groove diameter x groove width PTFE3, R01 material code | ||||||||
Address
No.1 Ruichen Road, Dongliuting Industrial Park, Chengyang District, Qingdao City, Shandong Province, China
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