
Hrks-D Double Cartridge Mechanical Seal for Barrier or Buffer Pressure
Model: HBTS
Temperature: -55/+160℃
Speed: ≤1.5m/s
Pressure: ≤35MPa
Product Introduction
Our company has a strong business team and professional pre-sales and after-sales technical team, which can provide a series of u cup BS, peek back up ring, glyd ring installation and value-added services according to the requirements of customers. Adhering to the principle of customer first, the company wholeheartedly provides customers with high-quality and efficient technical services, creates new research results, and provides strong support for the research and development of the industry. Our employees win the trust of customers and the company through honest and good character, and create conditions for the sustainable development of their personal careers.
Description
This Rod Buffer Seals Ring is used to absorb shock and fluctuating pressures under high loads, isolate high-temperature fluids and improve the durability of the packing. It has small frictional resistance and is suitable for high-speed, short-stroke operation. The slit on the tapered surface can leak backpressure. HBTS is a standard double-acting seal. Suitable for reciprocating motion, allowing for larger extrusion gaps for a wide range of applications.
The Rod Buffer Seals Ring has an excellent dynamic and static sealing performance, able to work in a dusty environment. Low friction, simple groove, and strong adaptability to working conditions. It is suitable for reciprocating hydraulic systems and performs excellent under high, low pressure, and high-frequency conditions. Furthermore, this seals ring is suitable for long and short strokes. Suitable for large rod diameters in fluids and high pressures, such as bulldozers, compressors, etc.
Specification
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 | ≤1.5m/s |
Temperature | -55 to 160℃ |
Pressure | ≤35MPa |
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 the standard of the NOK-HBTS series |

Installation Dimension table based on Metric Size (mm)
d f8 | D H9 | L +0.2 | H | O Ring CS d1 | R1≤ |
4~7 | d+4.9 | 2.2 | 2 | 1.8 | 0.3 |
8~18 | d+7.3 | 3.2 | 2.9 | 2.65 | 0.3 |
20~36 | d+10.7 | 4.2 | 3.9 | 3.53 | 0.5 |
38~180 | d+15.1 | 6.3 | 5.9 | 5.33 | 0.5 |
Features
This Rod Buffer Seals Ring has the following features:
● In series, no restricting pressure can be placed.
● Exceptional static and dynamic sealing properties.
● Excellent cushioning performance, high pressure.
● Low friction, low stickiness, no stick-slip behavior
● High extrusion resistance.
● Strong anti-corrosion properties.


The company has 5,000 square meters of professional production plants, 2000 square meters of constant temperature and humidity production workshop, dozens (of 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) to the material.


With the unremitting efforts of all employees, as well as highly consistent, stable product performance, timely technical support, and good after-sales service, we stand out in the Hrks-D Double Cartridge Mechanical Seal for Barrier or Buffer Pressure industry. With scientific modern management and unique business philosophy, we are one step closer to becoming a leader in the industry. We have excellent staff, perfect market system, active corporate culture, innovative development concept, efficient management team, and elite R&D team.
Hot Tags: rod buffer seals ring, China, suppliers, manufacturers, factory, customized, wholesale, roto variseal, dust seal dkb, u cup odi, rotary shaft oil seals, Piston Rod Seals U Cup UN, energized seals
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