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(7 product groups)
Hydraulic application caps and plugs safeguard hydraulic systems from dirt, moisture, corrosion, and physical damage. Essential during manufacturing, shipping, transit, and storage, periods when hydraulic fittings and ports are most exposed and vulnerable. Preventing contamination helps reduce the risk of hydraulic system failure and ensures long-term performance.
Hydraulic caps and plugs are used in industrial settings such as hydraulic hose fittings, metal fabrication, fluid transfer systems, and surface treatment processes like powder coating and painting. They are also essential during machine assembly, packaging, maintenance shutdowns, and repair operations. Whether it's a washer hose cap, quick release cap, hose plug, or flange cap, each is designed to block contaminants and preserve the interior.
Our range includes hydraulic plugs and hydraulic caps made from durable materials such as plastic, LDPE, and flexible TPE. Chosen for their resistance to chemicals, heat, and mechanical stress. We offer options to suit various thread types including Metric, UNF, JIC, BSP, and non-threaded configurations to match your requirements.
For more information about our range of hydraulic solutions and products, head over to our Knowledge Centre to view guides including:
A guide to hydraulic hose sleeves
Hydraulic hose spiral wrap explained
Hydraulic hose protection to ensure safe designs
A guide to hose clamps
Flanged Threaded Fitting Caps provide reliable protection for threaded ends of pipes, tubes, and rod studs in industries like automotive, construction, engineering, and HVAC. Designed to prevent damage from dirt, moisture, and contaminants, these caps ensure a secure, snug fit with or without O-rings.
Easy to install or remove by hand or with automated equipment, they offer an efficient solution for thread protection during storage, handling, or transport.
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.
Hose Washer Caps are applied on hose and tube ends in order to prevent them from sliding over the fittings.
Long Hexagonal Hydraulic Fitting Caps are designed to seal and protect the entire assembly fitting, on hydraulic hoses, from contamination, leaks, and damage.
The clever hexagonal body design offers a one-stop solution, with an effortless push fit, which protects both female and male profile.
It allows for greater torque application, reducing the risk of loosening under vibration or pressure fluctuations.
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.
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.
Essentra has a wide and varied range of finishing caps and nuts ideal for finishing off tubing and protection.
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