UNF Threads

Bolt Protection Caps conceal and protect bolt heads and nuts against weathering. Ideal for bolt heads, screw heads and nuts. They create an enhanced finished appearance and are a great choice for outdoor applications.

This range is supplied in a wide choice of sizes to suit multiple applications.These caps are available to fit over common Imperial UNF, Metric ISO 4017 or DIN 933 standard bolts.

Available in a variety of colours.

• Protects joint fasteners against tampering and weathering.

• Creates an enhanced finished appearance for your application.

• Great choice for outdoor applications.

Material: LDPE Colour: Black, White, Grey, Green, Brown Series Code: SRF0130, SR1802, SRF0074

The Centre Pull Plug easily plugs into a threaded or non-threaded hole. Due to the tapered design, is can be used to plug multiple inner diameters. These plug offers a snug and secure fit that prevents undesired substances from entering the open tube or hole, protecting internal components and ensuring optimal performance.

The integrated centre tab is designed for quick and easy remova, by pulling the tab upwards. The plug protects against damage, dirt, moisture, and corrosion during storage and shipping.

Used in various applications.

• Tapered design means plug is suitable for multiple inner diameters.

• The integrated centre tab is designed for quick and easy removal and installation by hand and with a tool.

• Used in various applications, including electrical cables in machinery, equipment, and control panels.

Material: LDPE Colour: Yellow, Orange, Red Series Code: SR1174, SR1068

Easy Pull Masking Caps are intended for masking parts during anodising, blasting, powder coating, e-coating, plating, and ordinary paint applications. Available in a variety of materials with a wide range of benefits. Silicone is a high-quality masking substance that can withstand high temperatures. EPDM is a less expensive compound that is less heat resistant.

• Easy Pull Masking Caps provide optimum protection for end tip profiles, such as rods, pipes and tubes during manufacturing processes.

• Typical applications include; anodizing, blasting, powder coating, e-coating, plating and general paint lines.

• To ensure the best possible fit, the inside diameter dimension should be approximately 10 percent smaller than the outside diameter of the part being masked.

Material: EPDM, Silicone, PVC Colour: Black, Natural, Clear, Yellow Series Code: SR1096, SR6119, SR5755, SRF0079

Ezeplugs are designed to seal and secure threaded holes. They feature a central or lateral pull tab for easy insertion and removal. Available in multiple sizes; they can protect over 25 imperial or metric thread sizes against damage, dirt, moisture and corrosion during storage and shipping. The flexible pull tab makes removal straightforward.

• Includes a central or lateral pull tab that allows them to be easily inserted and removed from threaded holes.

• It protects against damage, dirt, moisture, and corrosion during storage and shipping.

• It is simple to install with the patented quick-fit design and locks the plug in place with a simple push.

Material: LDPE Colour: Red Series Code: SR1055

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 larger flange allows for faster application and removal when using it by hand.

For the purpose of quality control; the natural coloured caps allow you to see through the cap and check whether the O-ring is installed, or not installed, on the protected fitting.

Provides a snug and secure fit.

• Designed to cover and protect threads.

• Protects from damage, dirt, and moisture.

• Used in the automotive and engineering industries.

Material: TPE, LDPE Colour: Yellow, Natural Series Code: SRCTLTPE, SR1116

High Temperature Flexible Caps with an ergonomic-friendly pull-tab design for easy fitting and removal. Suitable for use on threaded or plain applications.

The unique design fits a range of applications and thread sizes including Metric, UNF and BSP. The range includes options with a six-sided design.

• Pull-tab design.

• Unique design allows each cap to fit a wide range of diameters.

• Easy fitting and removal.

Material: Flexible PVC Colour: Yellow Series Code: SR1072

Flexible Vinyl Pull Tab Caps are suitable for both plain and threaded applications. Fits a variety of sizes. Is able to endure wear, and temperatures of up to +210ºC. Easy to install. Compatible with Metric, UNF and BSP thread sizes.

• Flexible Caps are suitable for plain or thread applications and the unique design means they fit a range of diameters.

• Feature a pull-tab,and star shaped design.

• Easy fitting and removal.

Material: PVC Colour: Black Series Code: SRF0077

Hexagonal caps are intended to cover hex-shaped fittings, bolts and nuts. Available in all conventional hydraulic coupling sizes. Due to the their adaptability, these caps can also be used to protect spherical components.

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

• Also suitable for the protection of round components.

• Flexible and economical.

Material: LDPE Colour: Natural Series Code: SR1127

High-temperature flanged caps shield openings from contaminants and damage in extreme heat conditions. These caps are built to withstand high temperatures, while maintaining their structural integrity, and sealing properties.

A flanged design extends beyond the edge of the component, providing additional coverage. Provides a secure grip for easy application and removal, even in challenging conditions.

Used in the automotive and manufacturing industries, as well as applications requiring metal finishing.

• Designed to protect threaded or non-threaded ends of pipes, tubes, and fittings. Typically used to for metric or imperial threads, both with and without O-rings.

• Simple installation and removal, either with automated equipment or by hand.

• Designed to withstand high temperatures.

Material: Silicone Colour: Yellow, Grey, Clear, Pink Series Code: SR5754

Stud Protection Caps protect threaded studs and bolts against damage, contamination, and corrosion. These caps are designed to resist severe temperatures without losing structural integrity or sealing characteristics.

The studded construction protects against injuries from protruding threaded rods.

Used in the automotive and manufacturing industries, as well as in applications that need metal polishing.

• Provides general protection during manufacture, storage, and transportation even in severe temperatures.

• Simple installation and removal, either with automated equipment or by hand.

• Ensures a snug fit.

Material: TPR Colour: Black Series Code: SR1026

This range of high temperature masking plugs features Silicone Rubber Tapered Plugs, EPDM Tapered Plugs and other Tapered Rubber Plugs made from Thermoplastic Rubber (TPR).

This extensive range of Tapered Plugs is available as a solid plug or with a hollow core, to aid in compression. Solid and hollow core options are available in our EPDM and High Temperature Silicone Plugs ranges. The hollow centre provides a cost-effective solution for larger sizes. The hollow design is more flexible than solid plugs, and allows for easier application.

Our Tapered Rubber Plug range features Univesal Plugs made from TPR. The tapered plug is designed to mask holes without masking the surrounding areas, and a pull tab allows for easy installation and removal. Suitable for temperatures up to 125C.

• Colours: Black, Blue, Green, Natural, Pink, Red and Yellow
• Simple push-fit design

Masking pull plugs are used to mask threaded and non-threaded holes, offering resistance to chemicals. The pull tab makes them easy to install and remove, ensuring a secure fit that prevents leaks or seepage. The reusable material allows for multiple uses, reducing the need for frequent replacements and helping minimize waste. Cn withstand temperatures of up to 250C.

• Used to mask threaded and non-threaded holes.

• The pull tab simplifies installation and removal, allowing for smooth insertion and a secure fit.

• Used in powder coating, sealing, automotive assembly, and electronics production.

Material: EPDM, Silicone, Silicone Rubber Colour: Black, Clear, Natural, Red, Grey, White, Purple, Green, Pink, Orange, Yellow, Blue Series Code: SR1094, SR1057, SR6118, SR6117, SRF0060, SR5750, SR5749, SR5752, SR1028

High temperature Washer Plugs are designed to mask the surface around a threaded or plain hole, with an integrated washer and plug that function as a single item. Easy to install and remove; they ensure a snug fit and secure seal to prevent leakage or contamination. Capable of withstanding temperatures of up to 250C.

• It has an integrated washer and plug that allows them to function as a single item.

• Can withstand high temperatures of up to 250 degrees Celsius.

• Used for powder coating, painting, plating, sealing, automotive assembly, and electronics manufacturing.

Material: Silicone, EPDM Colour: Natural, Black, White, Grey, Dark Green, Yellow, Pink, Purple, Red Series Code: SR1065, SR1092, SR5753

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 applications requiring fast removal during mechanical process and for this reason are a popular choice across various industries.

The flexibility of the materials used allows for a tight fit on to applications. The addition of the tab makes them an essential selection.

• Designed to protect from contamination and spillages.

• Flexible design means it can strech on to slightly larger dimensions for a snug fit.

• Used in the food industry, industrial applications, or storage applications.

Material: EVA, PVC Colour: Yellow, Black, Red Series Code: SR6110, SR1066

Push Fit End Caps are a simple and economical way of protecting metric and UNF threads during painting, assembly, and transportation.

Manufactured from a soft, durable TPE that provides a better grip, and a tight fit. Easy to install and remove.

Commonly used in plumbing, HVAC, and industrial applications.

• Suitable metric and UNF threads.

• Protects pipe ends from damage. Keeps dirt and debris out.

• Can operate in temperatures ranging from -60 C up to 135 C.

Material: LDPE, TPE Colour: Red, Blue Series Code: SR1161, SRCFBTPE, SRCFB

Push-Fit End Cap provides general protection for metric, BSP and UNF threads from contaminants such as dirt, dust and humidity. The pressure fit design allows for easy manual application, while ensuring a secure fit. It is ideal for a variety of applications in manufacturing, storage and for transportation of components.

This series is manufactured from Post Consumer Recycled material, which is designed to support Essentra’s ESG ambitions and those of our customers. Material: LDPE - PCR Colour: Green Series Code: SRCFBPCR

Push-in Plugs are a practical choice for blanking a wide range of holes or bores during manufacturing processes or transportation, and can be applied to finished products. Designed to shield the handler from rough surfaces caused by sharply cut hole edges. The varied styles available in our range can also be used to protect against ingress of contaminants.

They are simple to install and uninstall with a single push. Used in various applications, including medical, automotive, food and beverage, and industrial machinery.

Protects against damage, dirt, moisture, and corrosion.

• Shields the handler from rough surfaces caused by sharply cut hole edges.

• Used in various applications, including medical, automotive, food and beverage, and industrial machinery.

• Protects against damage, dirt, moisture, and corrosion.

Material: LDPE Colour: Natural, Black, White Series Code: SR1011

Quick Fit Connector Caps are designed for easy and secure connections to connectors, fittings, and ports.

Provides reliable protection against contamination, moisture, and physical damage. Their reusability and durability make them a cost-effective option for both temporary and long-term protection.

Used in a variety of sectors, including automobiles, manufacturing, and hydraulics.

• Flexible and ergonomic design ensures a snug fit.

• Simple installation and removal, without the need for tools or complicated processes.

• Resistant to impacts, chemicals, and temperature fluctuations.

• They can be reused.

Material: LDPE Colour: Yellow Series Code: SRQCF

Quick Fit Connector Caps are designed to protect male quick-release connectors that meet SAE standards. Used in hydraulic applications to safeguard components from dust, moisture, shock damage and fluid leak residue, which could impact the hydraulic system during manufacturing, testing, storage and transport. It features a long centre tab that allows for easy removal with a strong grip, making it especially important for fluid applications.

This series is manufactured from Post Consumer Recycled material, which is designed to support Essentra’s ESG ambitions and those of our customers. Material: LDPE - PCR Colour: Green Series Code: SRQCFPCR

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.

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 for a secure and reliable seal.Designed with a double sealing ring for a secure and reliable seal.

• Protects from contaminants and ingress of moisture.

• Easy to install and remove by hand.

• SRF1007, SRF1005, SRF1117

Material: LDPE, PA, PE Colour: Yellow, Blue Series Code: SR1005, SR1007, SR1117

These Snap Fit Plugs are designed to facilitate the 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 secure and snug fit. 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.

• Easy to install and remove. Once pushed into position, a single twist provides a secure and snug fit.

• Features a central tab at the top that provides a strong grip for tightening and removal.

• Suitable for Metric, BSP, and UNF threads.

Material: LDPE Colour: Red, Yellow, Blue Series Code: SR1008, SRTFUP, SR1119, SR1010

Snap Fit Plugs effectively protect against contaminants such as dirt, dust and moisture for a variety of applications during manufacture, storage and transport. Slight pressure snaps the plug into an internal rib to make a secure seal. The cross-head feature allows removal with a tool that twists the part out.

This series is manufactured from Post Consumer Recycled material, which is designed to support Essentra’s ESG ambitions and those of our customers. Material: LDPE - PCR Colour: Green Series Code: SRTFUPPCR

Soft Knurled Caps are a simple and economical way of protecting metric and UNF threads during painting, assembly or transportation. They have a knurled exterior and are manufacured from a soft, durable TPE that provides a better grip and a tight fit. Protects pipe ends from damage, and keeps dirt and debris out.

Easy to install and remove. They can operate in a temperature from -60 C up to 135 C.

Commonly used in plumbing, HVAC, and industrial applications.

• Simple and economical way of protecting metric and UNF threads.

• Easy to install and remove.

• Operatures in temperatures from mimimum -60 C up to maximum 135 C.

Material: TPE Colour: Blue Series Code: SRF0010

Stud Protection Caps are used to protect BSP and UNF threads. Designed with a small flange to allow the operator to tighten it with a socket spanner without having to remove the cap.

It increases protection against contaminants and limits wasted time during repetitive operations. It also allow economical handling.

• Material: Polyethylene (PE)
• Colour: Natural