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Hydraulic Application Caps & Plugs

 (45 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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Flanged Caps

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Flanged Caps are designed for easy assembly and removal either with automated equipment or by hand. Typically used to protect metric or imperial threads with or without O-Rings. The addition of having a larger flange will allow a faster application and removal when using it by hand. Provides a snug and secure fit.

As a possible quality check the natural colored caps allow you to see thru the cap and see whether the O-ring is installed or not installed on the protected fitting.

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Pull Tab Caps

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Pull Tab Caps are designed to protect applications from contamination and spillages. The pull tab design provides more surface contact area requiring less gripping force during installation and removal.

The tabs are particularly usefull in application requiring fast removal during mechanical process and therefore are widely used across various industries.

The flexibility of the materials offered allow a tight fit onto the components plus the addition of the tab makes these parts an essential selection.

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Tear Tab Caps

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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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Anti-Vibration Plugs - LDPE

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Anti-Vibration Plugs are designed to to be a reliable and efficient solution for reducing and dampening vibrations. It is used with BSP hydraulic fittings and has excellent resilience, shock absorption, and resistance to chemicals and solvents.

They have a serrated design that prevents loosening from vibration while retaining a firm grip on the pipe collar. They are easy to install and remove and, due to their transparency, can be inspected by the O-ring. Used in industries such as machinery, electronics, and automotive.

  • Material: LDPE
  • Colour: Clear

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Banjo Bolt Caps

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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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Banjo Union Caps

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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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Banjo Union Plugs

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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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Breather Caps

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Breather caps are parts used to protect equipment against moisture and particle contamination.

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Centre Pull Tab Hose Plug

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Centre 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.

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DKO Side Release Plugs

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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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Fluid Level Indicator Caps - Prismatic

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Prismatic Fluid Level Indicator Caps are resistant to solvents, oils, greases, and other chemical agents. The prismatic windows allow the viewing of liquid levels in various applications and are resistant to oils and solvents.

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Gas Cylinder Valve Plugs

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Gas Cylinder Valve Plugs have been developed in collaboration with major European gas companies to protect industrial gas valves from the ingress of dust, dirt and other contaminants. It provides a tight seal, while its unique vent cap allows for the safe release of gas after accidental opening of the valve.

It is easy to install and disassemble, making it a convenient solution for temporary applications and tamper-proof. It is used in gas storage, industrial and transportation applications.

  • Material: HDPE, LDPE
  • Colour: Yellow

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Hexagonal Caps

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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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Hose Washer Caps

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Hose Washer Caps are applied on the hose and tube ends to prevent them from sliding over the fittings. It features a tight-fitting design that helps to prevent water, dust, dirt and other contaminants from getting into the hose.

They are simple to install and remove and provide an airtight seal to maintain the integrity of the hose connector. It is used in construction applications, gardening, and the automotive industry.

  • Material: TPE, LDPE
  • Colour: Black, Yellow

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Non-Threaded End Caps

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Non-Threaded End Caps are ideal to securely protect non-threaded or threaded tubing, pipe or rods. They keep out dirt, debris and other contaminants and have some abrasion resistance which keeps the mating part safe during storage and shipping. Also used for masks in painting, plating or sand blasting applications.

They are quick and easy to install and remove. It can be used for plumbing, HVAC, and industrial applications.

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O-Ring Face Seal Caps

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

The cap design 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 snaps under the connector to keep it securely in place during transit and processing.

Our range is suitable for both UNF and JIC thread sizes.

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Push-In Plugs

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Push-in Plugs, also known as bungs, are a practical choice for blanking a wide range of holes or bores during manufacturing process, transportation, or on a finished product. Designed to shield the handler from rough surfaces caused by sharp cut hole edges, the various styles on offer are also widely used to protect against ingress of contaminants.

These plugs are 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.

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Quick Release Caps

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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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Quick Release Plugs

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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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Ribbed Pipe End Caps

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Ribbed Pipe End Caps are ideal for protecting threaded or non-threaded pipes, tubes or rods. In addition it is used to shield or mask areas during the painting process, as well as preventing dirt, dust, or debris from entering.

It is easy to install and remove, and it can withstand a maximum temperature of 79.4C. Designed for plumbing, HVAC, and industrial applications.

  • Material: LDPE
  • Colour: Red, Yellow

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Round End Caps - Standard

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Standard Round End Caps are non-threaded and available in a wide range of sizes. They are ideal for protecting threaded or non-threaded tubing, pipes and rods. Standard, short and long caps are available. The short versions are for general purpose closure and the long versions have an extra depth and feathered edge which ensure a tight fit. The design of these longer caps helps to prevent accidental displacement.

  • Material: PE, PP
  • Colour: Yellow, Black, Grey, Natural

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Round Vinyl End Caps

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Vinyl End Caps, commonly known as Flexicaps or PVC End Caps. A round cap that protects the outside diameter of threaded or non-threaded tubes, rods, pipes or paper tubes. The vinyl material can stretch on to larger dimensions for a tight fit without tearing, splitting or shredding.

These round vinyl end caps include a red flexible Polyvinyl Chloride (PVC) 60 Shore version, which is made from softer and more flexible material that allows for easy fitting. The bright red colour offers high visibility, thus reducing health and safety risks. Also included is a black PVC 80 Shore version that is more rigid than the red option. Also available is a glossy, dip-moulded round end tip that has a smooth finish. Durable round plastic end caps for round tubing are ideal product presentation and protection.

These vinyl caps provide a high-gloss, attractive finish making them ideal for use as decorative end caps. The flexibility and durability allows suitable fit for multiple applications. They can be used as a mask for coating, plating and paint applications, where the maximum temperature is not higher than 350F.

  • Simple push-fit design.

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Side Release Plugs

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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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Slottex Plugs

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Slotted Plugs are designed with a double sealing ring on the underside of the flange that provides a secure and reliable seal. The design includes five complete threads for a secure fit. Offers protection from dirt, dust, debris, liquid residue and corrision. Head designed not to trap liquid when the plug is secured in place.

These Sealing Plugs are easy to install and remove by hand. The hex head design allows the plug to be applied or removed with a screwdriver, spanner, Allen key or socket. The range covers an extensive offering of dimensions suitable for Metric, BSP, and UNF threads.

Used in various applications, including hydraulic, pneumatic, and general engineering industries.

  • Designed with a double sealing ring to provide a secure and reliable seal.
  • Protects from contaminants and prevents liquid and moisture from getting trapped in the hole.
  • Easy to install and remove by hand.

Material: PA, HDPE
Colour: Yellow, Blue

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Snap Fit Plugs

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These Snap Fit Plugs are to facilitate their application and removal on a component. They protect the aperture from ingress of contaminants like dirt, dust, and debris.

Easy to install and remove, once pushed into position, a single twist provides a tight, snug fit, and a central tab at the top provides a strong grip for tightening and removal. The range is suitable for hydraulic fittings with Metric, BSP, UNF and JIC threads. Each plug covers a range of different thread sizes and styles.

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