
As568 Standard Oil Resistant Buna-N Nitrile NBR Rubber O Ring for Hydraulic Seals
Model: DST
Temperature: -60/+260℃
Speed: ≤15m/s
Pressure: -
Product Introduction
Our company's independent research and development u cup hydraulic rod seal, spring energized face seal, hydraulic guide tape have attracted much attention and praise all over the world. The products are exported to many countries and regions and are deeply loved by consumers at home and abroad. It is further strengthening the improvement of the technical level of employees, injecting high technology into products, and striving to provide better quality and more affordable products to users at home and abroad. Do not hesitate to contact us if you are interested in our product specifications, application, pricing and others.
Description
The function of a hydraulic wear ring is to guide the shaft and hole sealing of a hydraulic cylinder, absorbing transverse forces. At the same time, it prevents metal-to-metal contact, optimizing the performance of the sealing system. Guide rings are precision machined according to tight tolerance specifications on the radial section of the guide. Therefore, they optimize guide load distribution and limit radial misalignment of components for best seal performance.
These standard guide rings can operate dynamically either on their outside or inside surfaces and, therefore, can be used in piston or rod applications.
Guide Rings have the task of guiding the rods and pistons of pneumatic and hydraulic cylinders and preventing direct metallic contact with the cylinder housing. They must have the capacity to absorb strong transverse forces even over a short guide distance while keeping frictional losses low.
Material | PTFE, POM, Nylon |
Color | Coffee, Yellow, Green, White, Black etc. |
Speed | ≤15m/s |
Temperature | -60 to 260℃ |
Pressure | - |
Medium | Mineral oil based hydraulic fluids, barely flammable hydraulic fluids, water, air and others |
Application | Mobile hydraulics, Standard cylinders, Pneumatic, Injection moulding machine, Presses etc. |
Standard or can fit the groove | Comply with standard of ISO10766, GB/T15242.2, GP&GR41/43/65, GP&GR69/73/75 |
Material | UH-PE |
Color | White |
Speed | ≤2m/s |
Temperature | -60 to 100℃ |
Pressure | - |
Medium | Mineral oil based hydraulic fluids, barely flammable hydraulic fluids, water, air and others |
Application | Foodstuff industry, Water hydraulics, Dry application, Pneumatic, Heavy duty cylinders etc. |
Standard or can fit the groove | Comply with standard of ISO10766, GB/T15242.2, GP&GR41/43/65, GP&GR69/73/75 |
Material | Phenolic resin, Phenolic fabric |
Color | Red and Blue |
Speed | ≤1m/s |
Temperature | -60 to 120℃ |
Pressure | - |
Medium | Mineral oil based hydraulic fluids, barely flammable hydraulic fluids, water, air and others |
Application | Engineering machinery, Mobile hydraulics, Heavy duty cylinders, Standard cylinders, Mills, Presses etc. |
Standard or can fit the groove | Comply with standard of ISO10766, GB/T15242.2, GP&GR41/43/65, GP&GR69/73/75 |

d | D | T | L1 +0.2 | w |
8~20 | d+3 | 3.0 | 3.2 | 1.5 |
15~35 | d+5 | 4.0 | 4.2 | 2.5 |
20~75 | 6.1 | 6.3 | ||
30~250 | 7.9 | 8.1 | ||
35~300 | 9.5 | 9.7 | ||
120~900 | 14.8 | 15.0 | ||
200~900 | 19.5 | 20.0 | ||
300~900 | 24.5 | 25.0 | ||
300~999 | 29.5 | 30.0 | ||
15~35 | d+4 | 4.0 | 4.2 | 2 |
20~75 | 6.1 | 6.3 | ||
30~250 | 7.9 | 8.1 | ||
35~300 | 9.5 | 9.7 | ||
120~900 | 14.8 | 15.0 | ||
200~900 | 19.5 | 20.0 | ||
300~900 | 24.5 | 25.0 | ||
300~999 | 29.5 | 30.0 |
D | d | T | L1 +0.2 | w |
15~20 | D-3 | 3.0 | 3.2 | 1.5 |
20~40 | D-5 | 4.0 | 4.2 | 2.5 |
25~80 | 6.1 | 6.3 | ||
40~270 | 7.9 | 8.1 | ||
40~320 | 9.5 | 9.7 | ||
125~900 | 14.8 | 15.0 | ||
200~900 | 19.5 | 20.0 | ||
300~900 | 24.5 | 25.0 | ||
300~999 | 29.5 | 30.0 | ||
20~40 | D-4 | 4.0 | 4.2 | 2 |
25~80 | 6.1 | 6.3 | ||
40~270 | 7.9 | 8.1 | ||
40~320 | 9.5 | 9.7 | ||
125~900 | 14.8 | 15.0 | ||
200~900 | 19.5 | 20.0 |
Feature
● Low cost production of the piston
● Long service life
● High resistance to gap extrusion
● Low coefficient of friction, good sliding performance
● Excellent wear resistance
● Snap-on assembly possible
● Can be used to replace many other compact seal design


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.


Whether our As568 Standard Oil Resistant Buna-N Nitrile NBR Rubber O Ring for Hydraulic Seals is standard design or customized according to customers' needs, it is known all over the world for its high performance, high reliability and innovation. Our company provides perfect after-sales service, our enterprise with integrity, quality, perfect service, and strive for innovation. Social development is changing rapidly, the future is full of opportunities and challenges, whether we can grasp the unknown variables is our prerequisite to achieve long-term development and invincibility.
Hot Tags: hydraulic cylinder wear ring, China, suppliers, manufacturers, factory, customized, wholesale, Rubber TC Oil Seals, upi seals, u cup piston seals, wear ring strip, metric spring energized seals, metric hydraulic wear ring
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