Hydraulic Plugs Manufacturer in China

❖ Corrosion-resistant

❖ Leakage-resistant

❖ Stainless steel surface

❖ Versatile application

Compatible Hydraulic Plugs Factory in China

Hydraulic plugs and caps are used to seal and protect the threads of hydraulic fittings from damage and to prevent the entry of dust and dirt. Caps have a female thread with a hexagonal head and plugs have a male thread with a square, hexagonal, countersunk head or a head designed with a socket. As multi-purpose components, hydraulic coupling plugs provide protection during transport and storage. They play an important role in preventing drainage leaks through finishing concealment or during maintenance or repair work.

Plugs are available in a variety of styles, such as hexagonal-headed plugs and square-headed plugs. Installation and removal can be faster and easier. Plugs for hydraulic fittings can be made of aluminum and stainless steel as well as other special materials. Available thread types include metric, BSP, JIC, NPT, and ORB. thread sizes range from 1/16″ to 2″.

Hydraulic Plugs Video

The products that we offer are reliable. Products of popular sizes are carried in stock for immediate delivery, and customized sizes can also be designed, quoted, and shipped quickly according to your needs. To know more details, click on the video below.

Topa-manufacturer Hydraulic Fittings

Topa manufactures a wide range of hydraulic fittings for all hydraulic applications. We have more than 8000 types of hydraulic fittings, our products are tested and approved.

Application

Hydraulic plugs play an important role in protecting hydraulic systems from the penetration of moisture, dirt, damage, and corrosion during production, transport, storage, and shipping. All harmful factors could lead to the failure of a hydraulic system. Hydraulic plugs should be used in crucial processes such as manufacturing, painting, and coating. They must protect all types of intruders from entering hydraulic systems through components.

Appearance Features

Hex Head Hydraulic Plug

The hex head hydraulic plug is one of the most common types, with the following appearance features:

Hexagonal Head: The most noticeable feature is its hexagonal head, which allows easy installation and removal using a wrench or socket.

Threaded Section: Below the head is the threaded portion, designed to connect with the hydraulic system’s interface.

Sealing Surface: Between the threads and the head, there is typically a sealing surface, which could be flat, tapered, or designed with an O-ring groove.

Material Appearance: Typically made from stainless steel, carbon steel, brass, or aluminum alloy, with surface coatings (such as galvanization, nickel plating, or chrome plating) to enhance corrosion resistance.

Size Markings: Many hex head plugs feature size, pressure rating, or manufacturer markings, typically engraved on the flat surface of the hex head.

Round Head Hydraulic Plug

The round head hydraulic plug (also known as a cylindrical or flat head plug) features the following appearance characteristics:

Cylindrical Head: The head is cylindrical, with the top typically flat.

Tool Slot: The head usually features internal hex slots, cross slots, or slotted grooves for installation and removal.

Subtle Design: Compared to the hex head, the round head design is smoother and doesn’t protrude, making it ideal for applications with limited space or those requiring aesthetic appeal.

Sealing Surface: Like the hex head plug, it includes a sealing surface for effective sealing.

Material and Surface Treatment: Made from similar materials to hex head plugs, with a variety of surface treatments available.

Hydraulic Caps

Hydraulic caps are used to cover and protect the external ports of hydraulic systems, with the following features:

Internal Thread Design: Most hydraulic caps feature internal threads for connection to the external threaded ports of the system.

External Shape: They may come in hexagonal, round, or other shapes, depending on the installation and removal method.

Sealing Elements: Internally, they typically contain sealing elements such as O-rings or gaskets to ensure a complete seal.

Protective Features: The external design is often intended to offer dustproof, dirtproof, and impact-resistant protection.

Material and Surface Treatment: Like hydraulic plugs, hydraulic caps are made from various metal materials, with different surface treatments available to suit specific application needs.

Appearance Features

A hydraulic plug is a crucial component used to seal hydraulic pipelines or interfaces. It acts as a barrier to prevent hydraulic fluid from leaking out of the system, while also preventing contaminants from entering the system. Hydraulic plugs are typically designed to withstand high pressure, ensuring they maintain sealing performance even under harsh operating conditions.

Sealing

Metal-to-Metal Sealing

Tapered Thread Sealing: Threads such as NPT (National Pipe Thread) and BSPT (British Standard Tapered Pipe Thread) rely on the taper of the threads to create a seal. When tightened, the interference between the outer and inner tapered threads gradually increases, forming a metal-to-metal seal.

Tapered Sealing Surface: Connectors like the JIC 37° fitting use a tapered sealing surface to make contact with the corresponding tapered seat, forming a line contact seal.

Auxiliary Sealing Element Sealing

O-Ring Sealing: For connectors like SAE straight thread fittings (ORB), an O-ring is used as the primary sealing element. When tightened, the O-ring is compressed in a specially designed groove, forming a reliable seal.

Washer Sealing: Some designs use washers made of copper, aluminum, or other materials to create a seal between two metal surfaces.

Pressure Withstanding Principle

Thread Strength: The geometry of the threads and the material strength determine the maximum pressure the fitting can withstand.

Wall Thickness Design: The wall thickness of the plug is designed with the anticipated working pressure and safety factor in mind.

Material Selection: Different metals have varying strengths and pressure resistance capabilities, so selecting the appropriate material is crucial for specific pressure requirements.

Stress Distribution: A good design ensures that the stress generated by pressure is evenly distributed, avoiding stress concentration points.

Size and Shape

Hydraulic plugs come in various sizes and shapes to fit different hydraulic pipelines, hoses, and tubes:

Thread Size: The thread size of the hydraulic plug should match the thread size of the hydraulic pipeline, hose, or tube it is meant to seal. Selecting an incorrect thread size can lead to looseness or improper fit, resulting in fluid leakage and system failure.

Inner Diameter: To ensure a tight fit, the inner diameter of the hydraulic plug should correspond to the outer diameter of the hydraulic pipeline, hose, or tube.

Shape: Hydraulic plugs come in various shapes, including round, square, and rectangular. The shape should match the hydraulic pipeline, hose, or tube shape to ensure proper fit and effective sealing.

Temperature Range

Hydraulic plugs must maintain their sealing performance within the operating temperature range of the system:

Most standard hydraulic plugs have an operating temperature range of -20°C to 120°C.

Special applications may require plugs capable of withstanding more extreme temperatures.

Aluminum plugs are generally not recommended for use above 275°F (approximately 135°C).

Save Time and Money with Topa!

Don’t wait for the competition—receive high-quality hydraulic adapters that save you both time and money. Get in touch now to receive a special offer.

Your Reliable Hydraulic Plugs Factory

The anti-corrosion surface treatment makes a high corrosion-resistant performance of more than 96 hours in the white rust test. This procedure gives the hydraulic plug a long service life.

The stainless steel version of hydraulic plugs has a high corrosion-resistant ability to aggressive medium and environmental influences. It also has a higher ability to adapt temperature change. This allows it to be used in more occasions. 630 bar’s pressure ratings mean hydraulic plugs can be applied in a wide range of situations.

High corrosion resistance verified by white rust test
Higher temperature resistance from stainless steel surface treatment
Pressure ratings up to 630 bar
Versatile usage for various types of components
Perfect Leak-free seal performance

Avoid Common Pitfalls

Choosing Based Solely on Price

Common Mistakes:

Choosing the cheapest product while ignoring quality.

Failing to consider the system failures and downtime costs caused by low-quality products.

Overlooking the importance of after-sales service and technical support.

How Topa Helps:

Topa focuses on providing reliable, high-quality products at competitive prices. We ensure that our products meet stringent quality control standards, helping you avoid unnecessary downtime. Our technical support and after-sales service are designed to ensure long-term operational efficiency.

Inappropriate Seal Design Selection

Common Mistakes:

Choosing an unsuitable seal type for the application (e.g., using a standard O-ring in high-temperature applications).

Ignoring the compatibility of sealing materials with system fluids.

Not considering the impact of system vibrations on seal performance.

How Topa Helps:

Topa offers a wide range of sealing solutions tailored to different operational conditions, including high-pressure, high-temperature, and vibrating environments. Our sealing designs ensure durability and compatibility with various fluids, ensuring optimal system performance.

Unclear Technical Specifications

Common Mistakes:

Specifications in purchase orders are incomplete or inaccurate.

Lack of technical personnel involvement in the procurement decision.

Using non-standardized product codes or descriptions.

How Topa Helps:

Topa ensures clear and precise product specifications in every transaction. Our team of experienced engineers collaborates closely with procurement to provide standardized product descriptions and ensure technical accuracy. We also offer product drawings and samples for your evaluation.

Lack of Long-Term Procurement Strategy

Common Mistakes:

Making procurement decisions on a case-by-case basis without long-term planning.

Failing to establish strategic partnerships with key suppliers.

Neglecting market price and supply trend analysis.

How Topa Helps:

Topa helps you streamline procurement by offering long-term partnerships, stable pricing, and reliable supply chains. We regularly analyze market trends to offer competitive pricing and ensure that our products meet evolving industry needs. We are committed to being a strategic partner in your supply chain management.

Why Choose Us

Topa is the manufacturer and expert specialized in the research, development, and production of hydraulic fittings. Our main products are various hydraulic fittings such as adapters, ferrules, flanges, and clamps. In Topa, You will find the exact products you want. We are committed to providing one-stop procurement services for our clients.

We are a hydraulic company in China with the following advantages:

More than 20 years of hydraulic experience

With more than 20 years of industry experience, Topa has built reliable and long-term partnerships with many suppliers and importers.

High-Quality Products and Hydraulic Technicians

We are able to provide various products such as rubber hoses, fittings, assemblies, etc.

Our technicians have rich professional knowledge and are good at finding problems from daily work, summarizing experience and improving product quality.

Advanced Workshop

Topa has a high-level workshop with many advanced equipment, which means we can customize fittings for our clients. Only need to know the specific details and model, we can produce the specific product.

Major savings on high-pressure hose assemblies

We produce our products in our own factory to control product quality and cost. This means that we can provide our customers high-quality hose assemblies with competitive price to help them save cost.

Strict quality control

Topa hydraulic fittings have passed a strict quality control test. Quality is not only limited to our products but also presented in our services and the process of our management.

FAQ

What are hydraulic plugs?

Hydraulic plugs are fittings used to seal or protect the open end of hydraulic hoses. They are used to prevent damage to the threads caused by the entry of dirt or liquids.

What are hydraulic plugs used for?

Hydraulic plugs prevent moisture, dirt, liquids, dust, and other contaminants from entering the hydraulic system during processes like production and transportation. Some can be used many times and many of them are versatile enough for various processes.

what are the materials of hydraulic plugs?

Hydraulic plugs are available in steel, stainless steel, aluminum and galvanized materials, etc.

Which plugs can adapt to high pressure？

Plugs made of steel, stainless steel and galvanized steel can be adapted to high pressure environments, and they are also highly resistant to corrosion.

Which plugs can adapt to low pressure？

Aluminum hydraulic plugs can be used in low voltage environments, which are lighter in weight and also resistant to corrosion.

What is the difference between caps and plugs?

Caps have a female thread with a hex-shaped head. With a male thread, the plugs’ head could be square, countersunk, hex-shaped, or designed with a socket.

How to choose hydraulic plugs?

You should consider four factors. First, the application environment. Second, usefulness. Third, materials. Fourth, the installation requirements.

How many types of hydraulic plugs?

There are a variety of hydraulic plugs, including countersunk and hexagonal socket plugs, hexagonal head plugs, square head plugs, and pipe plugs,etc.

Can hydraulic plugs be customized?

Yes, we have a fully equipped workshop to produce plugs with specific requirements. We can make customized plugs according to your draft or technical details.

How to make an order?

You can contact us through the email address and phone number on the website, directly tell us the product model you need or tell us your requirements, we will help you choose the right products.

Hydraulic Plugs Manufacturer in China

❖ Corrosion-resistant

❖ Leakage-resistant

❖ Stainless steel surface

❖ Versatile application

Compatible Hydraulic Plugs Factory in China

Hydraulic Flange Plugs

Hydraulic Split Flange Caps

Hydraulic Plugs Video

Topa-manufacturer Hydraulic Fittings

Application

Transportation

Mining

Agriculture

Appearance Features

Hex Head Hydraulic Plug

Round Head Hydraulic Plug

Hydraulic Caps

Appearance Features

Sealing

Pressure Withstanding Principle

Size and Shape

Temperature Range

Save Time and Money with Topa!

Don’t wait for the competition—receive high-quality hydraulic adapters that save you both time and money. Get in touch now to receive a special offer.

Your Reliable Hydraulic Plugs Factory

Avoid Common Pitfalls

Choosing Based Solely on Price

Inappropriate Seal Design Selection

Unclear Technical Specifications

Lack of Long-Term Procurement Strategy

Why Choose Us

FAQ

What are hydraulic plugs?

What are hydraulic plugs used for?

what are the materials of hydraulic plugs?

Which plugs can adapt to high pressure？

Which plugs can adapt to low pressure？

What is the difference between caps and plugs?

How to choose hydraulic plugs?

How many types of hydraulic plugs?

Can hydraulic plugs be customized?

How to make an order?

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