
Gdk Buffering Seal Reciprocating for Excavator Hbts / Step
Model: DSJ
Temperature: -45/+200℃
Speed: ≤15m/s
Pressure: ≤60MPa
Product Introduction
We insist on the belief that customers come first, and we are able to develop special viton oil seal, dust seal design, vee pack seals that satisfy our customers as quickly as possible. Our company has always taken 'green technology, leading the future' as its corporate purpose, and abides by the corporate spirit of 'integrity, pragmatism, teamwork, and innovation'. We strengthen the company training, departmental training, expatriate training, job training, career development planning and design guidance, fully develop and utilize all kinds of human resources, achieve and develop employees' career, and realize the common development and growth of the company and individuals. Moreover, customer satisfaction is our eternal pursuit.
Description
Step seals is composed of a rubber O-ring and a PTFE ring. The material is PTFE+NBR. In special cases, rubber will be used FKM. It can be divided into rod step seals and piston step seals, but the sealing effect is same.
According to its own deformation, will generate a higher initial contact stress on the sealing surface, prevent liquid leakage. When the hydraulic cylinder is working, the pressure fluid is elastic deformed through the O ring, maximize squeeze the square ring, making it close to the sealing surface, generated high additional contact stress and increased the pressure of the pressure liquid. Together with the initial contact stress, the leakage of the pressure liquid is prevented.
The installation physical performance of the rod step seals is stable. It has good dust-proof effect and is not easy to be invaded by foreign objects. Can prevent all external interference. Rod step seal has the characteristics of long service life, strong extrusion resistance and high wear resistance.
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 ISO7425/2, GB/T15242.3,RS13/RS11/RS15,,GSJ, Parker-OD series、Merkel company's OMS-MR series、Trelleborg-RS13 series、AS-XB 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≤ |
4~18 | d+4.9 | 2.2 | 1.8 | 2 | 0.4 |
8~25 | d+7.3 | 3.2 | 2.65 | 2 | 0.4 |
19~150 | d+10.7 | 4.2 | 3.55 | 3 | 0.8 |
38~250 | d+15.1 | 6.3 | 5.3 | 5 | 1.2 |
50~255 | d+20.5 | 8.1 | 7 | 7.5 | 1.6 |
250~700 | d+24 | 8.1 | 7 | 8 | 1.6 |
650~1500 | d+27.3 | 9.5 | 8.6 | 8.5 | 2 |
1000~1500 | d+38 | 13.8 | 12 | 8.5 | 2 |
Feature
● Low friction resistance, no creeping phenomenon
● The dynamic and static sealing effects are quite good
● No stickiness
● Good performance in both lubrication and no lubrication
● The groove structure is simple
● High pressure resistance, strong adaptability to working conditions


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 take high quality and high efficiency as the goal and customer satisfaction as the tenet, constantly optimizing and perfecting our Gdk Buffering Seal Reciprocating for Excavator Hbts / Step. We are committed to continuous and stable development in the global market, and will strive to continuously develop in a standardized and healthy direction! Continue to enhance, to be certain solution top quality in line with market and buyer standard requirements.
Hot Tags: hydraulic cylinder rod step seals, China, suppliers, manufacturers, factory, customized, wholesale, rotary oil seal, aq piston seal, idi seals, u cup seal material, o ring design, metric hydraulic wear ring
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