
Piston and Rod Seal/Hydraulic Seal/Glyd Ring China Manufacturer
Model: DSF
Temperature: -45/+200℃
Speed: ≤15m/s
Pressure: ≤60MPa
Product Introduction
We always think about problems from the perspective of users and assist users in solving problems encountered in the process of using U Cup Seals UPI, spiral back up ring, Hydraulic Cylinder Rod Glyd Ring. In order to better serve our customers, our company attaches great importance to the introduction and training of talents while introducing advanced equipment. We grasp the quality and safety management from the production of raw materials, processing, storage and transportation, and establish and improve the management standard system of product processing. Our working style is to be pragmatic, innovative and efficient.
Description
Glyd ring piston seal DSF is composed of PTFE seal and O-ring. It is used for double acting sealing of the piston rod of the hydraulic cylinder. Due to adopting special modified PTFE material, it can guarantee excellent low friction, wear resistance, extrusion resistance, high-temperature resistance and chemical resistance.
Glyd ring is a very effective and reliable low friction seal. It is particularly suitable as a piston seal in high pressure and low pressure systems. It comprises a PTFE ring, strengthened with additives to resist creep, which is pre-loaded by an O ring to be effective for the operating pressure range recommended.
As the pressure rises the O ring deforms and compresses the PTFE ring against the tube wall increasing the sealing force and the effectiveness of the seal. As only the PTFE ring is in contact with the sliding surface, friction is very low and stick-slip movement is eliminated.
Slide Ring Material | PTFE Filled Bronze, Carbon, MoS2, Graphite, Glass Fiber, Ekonol, Polyimide, etc. |
Slide Ring Color | Black,Green,Coffee,Yellow etc. |
O Ring Material | NBR or FKM |
Color | Black or Brown |
Speed | ≤15m/s |
Temperature | -45 to 200℃ |
Pressure | ≤60MPa |
Medium | Mineral oil based hydraulic fluids, barely flammable hydraulic fluids, water, air and others |
Application | Mobile hydraulics, Standard cylinders, Machine tools, Injection moulding machines, Presses etc. |
Standard or can fit the groove | Comply with standard of ISO7425/1, GB/T15242.3,PG44/PG42/PG46, GS55044/42/46, GSF, Trelleborg-PG4 series,Merkel company's OMK-MR series、Parker-OE series、AS-YB series |
Pressure | 160bar | 250bar | 400bar |
Max Gap E | E≤0.6mm | E≤0.4mm | E≤0.2mm |

Installation Dimension table based on Metric Size (mm)
D H9 | d h9 | L +0.2 | O Ring CS d1 | C≥ | R1≤ |
8~24 | D-4.9 | 2.2 | 1.8 | 2 | 0.4 |
15~48 | D-7.5 | 3.2 | 2.65 | 2 | 0.4 |
25~110 | D-11 | 4.2 | 3.55 | 3 | 0.8 |
50~140 | D-15.5 | 6.3 | 5.3 | 5 | 1.2 |
125~320 | D-21 | 8.1 | 7 | 7.5 | 1.6 |
330~660 | D-24.5 | 8.1 | 7 | 8 | 1.6 |
670~990 | D-28 | 9.5 | 8.4 | 8 | 1.6 |
1000~1500 | D-38 | 13.8 | 12 | 8.5 | 2 |
Feature
● Low stick/slip
● Low breakout and running
● High surface speed
● Compact piston design
● Suitable for non lubricating fluids depending on seal material for optimum design flexibility
● High wear resistance ensures long service life
● No adhesive effect to the mating surface during long period of inactivity or storage
● Suitable for most hydraulic fluids in relation with most modern hardware materials and surface finish depending on material selected


The company has 5,000 square meters of professional production plants, 2000 square meters of constant temperature and humidity production workshop, dozens (sets) of advanced production equipment.
Own a professional and technical production team and sales service team.
The selection of raw materials are international first-line brand suppliers, In order to ensure product quality, we promise that don't add waste (recycled materials) in the material.


We actively participate in social and environmental protection public welfare activities, vigorously develop green Piston and Rod Seal/Hydraulic Seal/Glyd Ring China Manufacturer, and fulfill our social responsibilities. We will provide customers with high-quality products from the most professional perspective and the most dedicated service. We encourage employees' subjective initiative, optimize the employment environment, recruit talents, and focus on the cultivation of employees' moral cultivation, scientific and technological knowledge and business skills.
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