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Hydraulic Application Caps & Plugs

 (43 product groups)

What are hydraulic application caps and plugs used for?

Hydraulic application caps and plugs provide the critical role of protecting hydraulic systems from dirt, moisture, corrosion and damage during manufacturing, transit, shipping and storage. All of which can be harmful factors contributing to hydraulic system failure. Hydraulic caps and hydraulic hose plugs should be used through various processes such as manufacturing – particularly in powder coating and painting, during assembly and packaging and also used during machine shutdown when undertaking routine maintenance or repair. Their job is to prevent all types of contaminant from entering hydraulic systems through ports and fittings.

Thread types in our range include:

UNF
BSP
Metric
JIC threads

For more information about hydraulic line caps and plugs, hydraulic hose caps, fittings and other important products, visit our ‘How to choose caps and plugs guide.

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Banjo Bolt Caps

In stock In production

A Protection Cap and Retaining Washer in a single unit. These Banjo Bolt Caps hold everything together during assembly, storage and shipping.

A highly versatile cap that will protect your application against damage and the ingress of dirt. The product is also supplied with bridged retaining loops. The caps are easy to grip, even when wearing gloves and are available in a choice of sizes to suit your project needs.

  • Material: Low-Density Polyethylene (LDPE)
  • Colour: Black

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Threaded Protection Plugs - Wide Flange

In stock In production

These Wide Flange Threaded Protection Plugs protect threads and fittings from damage during production, storage, and shipment, ensuring they remain in good condition and ready for use. Their nitrile gasket seals the plug to the mating surface for leak-tightness. The protection plug protects from contaminants like dirt, dust, debris, and moisture from the hole.

Its wide flange design keeps any paint flakes from the hole when removed. It is easy to install or remove by hand, screwdriver, or torque wrench. Due to its Nylon material, it is recommended for intermittent temperatures from -40C to +100C. Used in various applications, including hydraulic, pneumatic and general engineering industries.

  • Material: Nylon
  • Colour: Yellow

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Banjo Union Caps

In stock In production

A range of protective caps designed for Banjo Union connections. They provide external assembly cover during storage and transportation to protect the connection from the ingress of dirt. This range is available in a choice of two material options; Flexible Polyvinyl Chloride (PVC) and High-Density Polyethylene.

The Flexible PVC options offer a truly snug fit that offers optimum protection. The flexible material allows for quick fitting and removal, which is aided by a convenient finger tab.

The harder material of our HDPE options make application fast, by easily clicking the cap into place for a secure fit. Suitable for temperatures ranging from a minimum of -30 up to a maximum of +80 degrees celsius.

  • Materials: Flexible PVC and HDPE
  • Colours: Red and Yellow
  • Fits hydraulic Banjo Unions to DIN 7642 B/E

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Threaded Sealing Caps - BSP/Gas Threads

In stock In production

These Threaded Sealing Caps for BSP/GAS Threads protect threads and fittings from damage during production, storage, and shipment, ensuring that they remain in good condition and ready for use when needed. The cap is fitted with an internal neoprene rubber sealing disk to limit fluid leakage, plus it reduces potential shearing. The protection plug protects from contaminants like dirt, dust, debris, and moisture from the hole.

It is easy to install and remove by hand, but its hex head allows the plug to be applied or removed with a spanner or socket at low torque. Used in various applications, including hydraulic, pneumatic and general engineering industries.

  • Material: HDPE
  • Colour: Yellow, Red

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Threaded Sealing Caps - Metric Threads

In stock In production

These Threaded Sealing Caps for Metric Threads protect threads and fittings from damage during production, storage, and shipment, ensuring that they remain in good condition and ready for use when needed. The cap is fitted with an internal neoprene rubber sealing disk to limit fluid leakage, plus it reduces potential shearing. The protection plug protects from contaminants like dirt, dust, debris, and moisture from the hole.

It is easy to install and remove by hand, but its hex head allows the plug to be applied or removed with a spanner or socket at low torque. They are suitable to protect metric threads and are used in various applications, including hydraulic, pneumatic and general engineering industries.

  • Material: HDPE
  • Colour: Yellow

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Threaded Sealing Caps - UNF Threads

In stock In production

These Threaded Sealing Caps for UNF Threads protect threads and fittings from damage during production, storage, and shipment, ensuring that they remain in good condition and ready for use when needed. The cap is fitted with an internal neoprene rubber sealing disk to limit fluid leakage, plus it reduces potential shearing. The protection plug protects from contaminants like dirt, dust, debris, and moisture from the hole.

It is easy to install and remove by hand, but its hex head allows the plug to be applied or removed with a spanner or socket at low torque. Used in various applications, including hydraulic, pneumatic and general engineering industries.

  • Material: HDPE
  • Colour: Yellow

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Hexagonal Caps

In stock In production

Our range of Hexagonal Caps have a rigid design that allows for easy fitting and removal. Available in all common hydraulic coupling sizes.

The caps have a hexagonal shape, which makes them ideal for the protection of hexagonal connections and assemblies. However, the caps versatility means they are also suitable for the protection of round components. This makes them a flexible and economical choice for a range of projects.

  • Material: Low-Density Polyethylene (LDPE)
  • Colour: Natural

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O-Ring Face Seal Caps

In stock In production

Our range of O-Ring Face Seal Caps are designed for the protection of O-Ring face seal connectors that are used on hydraulic connections.

The design of these caps features a longer overall length for added protection from the ingress of dirt and other contaminants. They also include a moulded retaining ring at the bottom that easily snaps under the connector to keep it securely in place during transit and processing.

Our range has a variety of sizes to suit your application needs. They are suitable for UNF and JIC threads.

  • Material: Polyethylene (PE)
  • Colour: Blue

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Quick Release Caps

In stock In production

A Quick Release Cap used in hydraulic applications. The female fitting is suitable to protect quick release couplings ISO 7241-1 Series A and B.

The cap is designed to remain attached to the hose. It offers superior protection from the ingress of dirt and moisture, and resistance to corrosion.

  • Material: Thermoplastic Elastomer (TPE)
  • Colours: Blue, Green, Red and Yellow
  • Temperature Range: -40F up to 275F (-40C up to 135C)

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Banjo Union Plugs

In stock In production

Banjo Union Plugs are designed to protect banjo unions from damage, wear and tear, and dirt or moisture ingress. They provide a secure fit on banjo unions DIN 7642 B/E, forming a reliable sealing surface to prevent leaks.

Ideal for hydraulic and fluid systems, they are durable and can come with or without a cover tab. It can be used in applications in automotive or industrial machinery.

  • Material: LDPE
  • Colour: Natural

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Centre Pull Tab Hose Plug

In stock In production

Pull Tab Hose Plugs are designed to plug and seal hose ends. They have ribs that ensure a tight fit when plugging hydraulic lines without straining them. It features a high tensile strength, toughness, and flexibility.

The inside centrally located pull tab enables simple plug insertion and removal, making it a hassle-free alternative. Furthermore, the tapered form allows for the plugging of numerous interior diameters. This plug's snug fit and secure seal effectively prevent dust, dirt, and other impurities from entering the hose, protecting internal components and guaranteeing optimal performance. Commonly used for construction, automotive, and agricultural applications.

  • Material: EVA
  • Colour: Yellow

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DKO Side Release Plugs

In stock In production

These DKO Side Release Plugs protect DKO-compression fittings (24 nipples with O-Ring) during transit, storage, and processing from damage and contaminants. These plugs' sturdy structure ensures dependable performance even in harsh environments. The leak-proof seal and secure connection prevent fluid leakage or loss, reducing the danger of equipment damage, productivity loss, or safety issues.

The flexible end fits snugly into the DKO swivel nut, and the side pull tab allows easy removal. Commonly used to meet the needs of industries such as automotive, manufacturing, and machinery.

  • Material: LDPE
  • Colour: Red, Yellow

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Flanged Caps

In stock In production

Flanged Caps are designed to cover and protect the threads of tube, pipe or rod studs. Used in the automotive, construction, engineering and air conditioning industries.

They are used to protect from damage, dirt, moisture and other contaminants. Easy to install and remove with automated equipment or by hand, providing a snug and secure fit.

  • Material: Silicone, PE, PVC, TPR
  • Colour: Yellow, Natural, Pink, Red, Black

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Pull Tab Caps

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Pull Tab Caps are designed to protect applications from contamination and spillages. It has a curved pull tab design provides more surface contact area requiring less gripping force during installation and removal. It is flexible so that it can be stretched onto the cap for easy installation and removal. Flexible so it can stretch onto slightly larger dimensions for a snug fit without tearing, splitting or shredding.

They are easy to install and remove, making it simple to open and close the container quickly and efficiently. They are used in the food industry, industrial applications, or storage applications.

  • Material: EVA, PVC
  • Colour: Yellow, Black, Red

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Push-In Plugs

In stock In production

Push-in Plugs, also known as bungs, are a practical choice for blanking a wide range of holes or bores during transportation, the painting process, or on a finished product. Designed to shield the handler from rough surfaces caused by cut holes and internal threads, these plugs can also mask and shield the handler from rough surfaces caused by cut holes and internal threads. The plugs can also mask and shield holes during a low-temperature painting procedure.

It is simple to install and uninstall with a single push and protects against damage, dirt, moisture, and corrosion. Used in various applications, including medical, automotive, food and beverage, and industrial machinery.

  • Material: LDPE
  • Colour: Natural, Black, White, Yellow, Red, Blue

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Quick Release Plugs

In stock In production

Quick Release Plugs are designed to remain attached to the hose while providing secure and sealing solutions. They are male fittings for the ISO A and ISO B series. They provide great protection against dirt, moisture, and corrosion and prevent leaks.

They also feature a quick-release mechanism that makes installing them simple without additional tools. It can withstand temperatures from -40C to 135C and is commonly used in automotive, electronics, manufacturing, and hydraulic systems applications.

  • Material: TPE
  • Colour: Blue, Green, Yellow, Red

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Side Release Plugs

In stock In production

Side Release Plugs are innovative sealing solutions designed to provide a secure and convenient closure for a wide range of applications. These plugs feature a unique side release mechanism that allows for quick and effortless insertion and removal, while ensuring a reliable and tight seal. Manufactured using high-quality materials such as durable plastics or rubber, Side Release Plugs offer excellent resistance to temperature, chemicals, and environmental factors. The versatile design of these plugs makes them suitable for various applications across different industries.

One of the main characteristics of Side Release Plugs is their user-friendly design. The side release mechanism enables easy insertion and removal, eliminating the need for additional tools or excessive force. This feature is particularly advantageous in applications that require frequent access or maintenance, such as in fluid containers or industrial machinery. Additionally, Side Release Plugs provide a secure and reliable seal, preventing leakage, contamination, or damage to the internal components. This makes them ideal for applications that demand protection against dust, moisture, or other external factors.

  • Material: LDPE
  • Colour: Natural

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Tear Tab Caps

In stock In production

Tear Tab Caps are a standard, off-the-shelf solution that will allow you to meet your customers demands without those all too common time delays.

Tear Tab Caps are quick-fit and quick-release caps. As a rapid solution, they can be easily fitted and removed across an array of applications, including; critical hydraulic tubes and pipes, such as those that carry oils and other fluids around vehicles and machineries. This makes them an ideal choice for the specialist vehicle manufacturing industry, and other automotive and manufacturing sectors.

Tear Tab Caps also assist in the protection of tube and pipe ends during transportation and storage. They protect parts from damage, dirt, moisture and other forms of ingress. These caps are highly versatile, and ideal for a range of applications and different threads, including; BSP, GAS, UNF, JIC and NPT.

Made from Low Density Polyethylene (LDPE), the caps feature a simple tear-away tab for quick release, and fast removal. The ease of extracting the Tear Tab Cap from the hydraulic pipework makes the removal process faster. By simply pulling the tab, the cap splits open, tearing away.

The LDPE material is tough and flexible. They provide many of the advantages of PVC caps, such as integrity and cleanliness.

  • Colours: Blue, Natural and Yellow
  • RoHS Compliant

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