They are protective and supporting elements made from extrusion-resistant materials which generally have a rectangular cross section. They are installed in a groove together with an elastomeric sealing element preferably with a corresponding O-Ring in static appliions.Due to the tight fit of the Back-up Ring in the housing, they prevent extrusion of the pressurised elastomeric sealing element into the sealing gap.​

OUB Seal is a technology production enterprise production and sales. It owns professional production plants and is mainly engaged in the research, manufacture and sales of seals in various industries. Its products are exported to overseas markets such as Asia, Europe, United States, Middle East and etc.

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We also supply all the excavator oil seals and hydraulic seal kits as below:

1. Hydraulic Cylinder Seal kit/Boom Arm Bucket Cylinder Seal Kit

2. Control Valve Oil Seal Kit

3. Main Pump Oil Seal Kit

4. Center Joint Oil Seal kit

5. Swing Motor Oil Seal Kit

6. Travelling Motor Oil Seal Kit

7. Chain Adjuster Oil Seal kit/Track Adjuster Cylinder Oil Seal Kit

8.Gear Pump Oil Seal Kit

9. Remote Control Valve Oil Seal Kit

10. Orings&Oring Kit Box

Pls feel free to contact us for further information. Thank you very much!WhatsApp:+8613650826584

FAQ

Q1: Are you trading company or manufacturer?
A:We are trading company and we also have our own factory to produce seals.With more than 20 years of PU manufacturing experience.

Q2: I want to know more information, what should I do?

A:Welcome talk with us online or leave a message. Besides, you can also contact us by Gmail.

We will reply to you within 24 hours on weekdays.

Q3: What items we need to know for the offer?

A: Product types, material, dimension, quantity is the four main items we need to know before offer. More details information we get, more better price we can supply.

Q4: Do you have a minimum order requirement?

A: Small trial order is acceptable.

Q5:what can you buy from us?

A:Pump Seals,Combi Seals,Cassette Seals,Pressure Seals,VB Seals.

Q6: How can i pay the goods?

A: For the payment, we support the PayPal, Western Union, Money Gram, T/T in advance, L/C at sight, etc.

Guangzhou OUB Machinery Equipment Co.,Ltd since its inception in 2004, has been engaged in hydraulic seals business of excavators, loaders, bulldozers,breaking hammers and other seals have in-depth study. Through more than 15 years of efforts, OUB has accumulated a large number of domestic, imported excavators and broken hammer seal data, and for new products and new models of seals data constantly updated, finishing and perfect. After more than 10 years of practical inspection, product quality is stable and reliable, has accumulated rich experience and good reputation, with long-term cooperation at home and abroad friends and customers, "take care of the equipment,improve the efficiency and honesty" concept won the customers at home and abroad highly recognized and widely praised.
In the future, we will continue to maintain a rigorous scientific attitude, to maintain a professional, precise style of work, and strive to become the best supplier of Chinese seal repair kits, look forward to your cooperation!