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| Customization: | Available |
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| Material: | PTFE |
| Application: | Cylinder |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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| Description | ||||||||
| The GSF profiles are double acting composite piston seals composed of a filled PTFE friction ring and pre-tightened rubber O-ring. They can be assembled in grooves according to standard ISO 7425/1. Option of connecting the seal to 1 or 2 back-up rings. | ||||||||
| Design Standard | ||||||||
| The series is in conformity with ISO 7425/I, GB/T15242.1 and GB/T15242.3 | ||||||||
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Technical data | |||||||
| Temperature | -40°C / +200°C | |||||||
| Pressure | Up to 60MPa | |||||||
| Speed | up to 15m/s | |||||||
| Medias | Mineral hydraulic oils Fire-resistant liquids Biocompatible fluids Water and others |
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| Material | Slide ring Bronze-filled PTFE Carbon-filled PTFE O'Ring NBR 65-92 Shore A Black FKM 75-91 Shore A Green, Red, Black, Brown |
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| Applications | Advantages | |||||||
| Mobile machinery Injection presses Machine tools Standard cylinders Injection moulding machines |
Optimal sealing in static and dynamic applications Low friction coefficient; no stick-slip effect Excellent abrasion and extrusion resistance Wide temperature range and excellent chemical resistance, depending on the material selected for the O-ring |
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| Range of D (mm) | d (mm) | L1+0.2 (mm) | Thickness of the O-ring (mm) | r1≤ |
| 8-12 | D-4.9 | 2.2 | 1.8 | 0.4 |
| 15-48 | D-7.5 | 3.2 | 2.65 | 0.4 |
| 25-110 | D-11 | 4.2 | 3.55 | 0.8 |
| 50-140 | D-15.5 | 6.3 | 5.3 | 1.2 |
| 125-320 | D-21 | 8.1 | 7 | 1.6 |
| 330-660 | D-24.5 | 8.1 | 7 | 1.6 |
| 670-950 | D-28 | 9.5 | 8.6 | 1.6 |
| 1000-1500 | D-38 | 13.8 | 12 | 2 |
| Hydraulic seals and pneumatic seals are designed as per the cylinder working pressure, cylinder speed, operating temperature, working medium and application. Hydraulic seals are generally relatively soft, non-metallic rings captured in groove or fixed in a combination of rings, forming a seal assembly, to block or separate fluid in reciprocating motion applications. Hydraulic seals are vital in machinery. Their use is critical in providing a way for fluid power to be converted to linear motion. Not only must the hydraulic seals prevent leakage of fluid from the Cylinder, but hydraulic seals must also withstand high pressures, extreme temperatures and transverse forces within the cylinder. In such applications, the function of Hydraulic Seals goes far beyond preventing fluid leakage. Hydraulic seals can be made from a variety of materials such as polyurethane, rubber or PTFE. The type of material is determined by the specific operating conditions or limits due to fluid type, pressure, fluid chemical compatibility or temperature. A static hydraulic seal is located in a groove and sees no movement - only sealing within its confined space, acting like gasket. A type of dynamic hydraulic seal called a rod seal is exposed to movement on its inner diameter along the shaft or rod of a hydraulic cylinder. A type of dynamic hydraulic seal called a piston seal is exposed to movement on its outer diameter along the tube or bore of a hydraulic cylinder. A hydraulic seal is used to contain fluids and maintain the hydraulic pressure (piston seal, rod seal, back-up ring), to stop the inlet of impurities and to preserve the lubricating film on the rod (wiper seal) and to resist any deformation under a radial load by guiding the piston and rod (wear ring and guide strip). DEF Seals has a complete range of hydraulic seals and we can also assist you in creating custom-made seals for linear and static hydraulic applications. |
1. Contact DEF's salesman to get a quotation.( by Email, Telephone, Trademessage)
2. Send DEF your asked type and detailed instruction(mateials, size, quantity,color, special requestes etc.)
3. Will send price and other details informations to you,send back Purchaser Order for approval
4. After confirm order and timeline, DEF'll start production procedure once receive payment.
5. If require sample, please inform DEF in advance.
6. 5~10 working days for making seals.
7. Quality Checking, DEF can send bulk order photo for approval before packing, if you need.
8. Packing
9. Order release for shipping.
10. Any issue,please contact DEF after receive package. DEF'll invest and consult with you for solution.
11. Quality and Service are DEF principle.
Please feel free to contact us if you need more details about our factory and products.
| Name | Ptfe+bronze piston seals for machine tools |
| Sliding speed[m/s] | 15 |
| Temperature [° C] | -45...+260 |
| Pressure Pr: N/mm² (Max) | 60 |
| Medium | Mineral oil based hydraulic fluids, barely flammable hydraulic fluids, water, air and others. |
| Material | PTFE+bronze/carbon, PU, etc. |
| Color | coffee, green, grey green,red |
| Advantages | 1. Suitable for dry use (depending on the load). 2. Very good temperature resistance. 3. Compatible with most of the fluids in contact. 4. Easy assembly, low friction coefficient. |
| Application | hydraulic cylinders, Pneumatics, Presses Injection moulding machines, Excavator Machine tools |
| Certificates | ISO9001-2015, SGS |
| MOQ(Pcs) | 10 |
| FOB | FOB Shenzhen |
| Method of payment | T/T (bank account, paypal,western union) |
| Delivery time | 5 to 7 working days, 2 days for in stock |
| Supply ability | 5000000Pcs/Month |
| Packaging | plastic film for inner packaging and cartons for outer packaging |
| Export market | South Asia, Southest Asia, Europe, South America, North America, Africa, Middle East, Australia |
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