
Gdk Hby Buffer Ring Seal
Model: HBY
Temperature: -55/+120℃
Speed: ≤1m/s
Pressure: ≤50MPa
Product Introduction
Our goal is to provide our customers and consumers with ideal high-quality chevron packing seal, idi seals, u cup isi. Our company actively undertakes the social responsibility due to us and continuously supplies high-quality and economic products to meet the needs of the society. We actively play the advantages of cost management as the core and production site management as the basis. We have been working diligently ever since to embrace the needs of our global customer base. We work to ensure absolute customer satisfaction. Our team has dedicated itself to perfecting our three core components, 'Service, Management and Craftsmanship'. With our own rapid development and efficient operation, we have played an important role in promoting the development of the industry.
Description
HBY hydraulic buffer seal, mounted on the pressure side of the piston rod seal, is designed to improve the durability of the piston rod seal by venting the pressure back to the system side. The main parts of the buffer seal are the static lip, dynamic lip, radial slots, and radial channels. The static lip of the seal is optimized with high flexibility to relieve the interstage pressure. The dynamic lip can minimize the friction and back pressure under high-pressure condition. The radial slots of the buffer seal are designed to reduce the risk of blow-by. The radial channels, a vital element in the whole seal structure, facilitate back-pumping and relieve the pressure.
Seal Ring Material | NBR or PU |
Seal Ring Color | Ivory, Red, Blue |
Back Up Ring Material | POM |
Color | Black or White |
Speed | ≤1m/s |
Temperature | -55 to 120℃ |
Pressure | ≤50MPa |
Medium | Mineral oil based hydraulic fluids, barely flammable hydraulic fluids, water, air and others |
Application | Excavators, Standard cylinders, Mobile hydraulics, Presses etc. |
Standard or can fit the groove | Comply with standard of NOK-HBY series |
Pressure | 35 Mpa | 42 Mpa | 50 Mpa |
Max Gap E | E≤0.8mm | E≤0.4mm | E≤0.25mm |

Installation Dimension table based on Metric Size (mm)
d f8 | D H9 | L +0.2 | H |
40~190 | d+16 | 6.3 | 6 |
200~220 | d+21 | 8 | 7.7 |
Feature
● A long service life to minimize maintenance and downtime
● No adhesion to the sliding surface
● Excellent abrasion and wear resistance
● Leak-free performance
● Resistant against high temperature and pressure
● Effective in relieving any pressure built up in the hydraulic system


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.


Looking forward to the future, we will continue to gather elites, integrate industry resources, create a corporate image of 'integrity, standardization, stability, and strength', and lead the development of the Gdk Hby Buffer Ring Seal industry. The growth of an enterprise is a process in which product innovation, process innovation, system innovation and management innovation are continuously promoted. We take the customer's trust as the guidance because we want to pursue the long-term cooperation partner.
Hot Tags: hydraulic buffer ring hby, China, suppliers, manufacturers, factory, customized, wholesale, double delta piston seals, rotary shaft seals, Single Lip PTFE Oil Seals, hydraulic o rings, rod seal SPN, ptfe o rings
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