Caps and Plugs
Discover our comprehensive range of caps and plugs, designed to provide reliable protection and sealing solutions across a wide variety of applications. Our selection ensures components and assemblies remain safeguarded during manufacturing, transport, and storage, reducing the risk of damage or contamination.
DO YOU KNOW
Proper Protection Helps Cut Rework Time by 25%?
Engineering Essentials When Choosing Caps & Plugs
Material Performance
LDPE enables elastic quick-fit, HDPE ensures stability, and TPR improves dynamic sealing.
Managing Tolerance and Surface Quality
Even 0.1 mm burrs can tear low-grade caps; precision-molded protection ensures clean secure fitting.
Moisture Sealing for Corrosion Prevention
Unsealed ports let moisture cause corrosion; proper sealing can extend component life by up to 50%.
High-Temperature Performance
High-temp caps avoid heat deformation; LDPE softens at 80–90°C, silicone withstands up to 315°C.
Cycle-Time Impact: Fast Installation Matters
Complex plugs slow cycles and fatigue operators; push-fit designs install 70% faster for efficiency.
Vibration- Resistant Protection
Vibration may loosen unsecured plugs; locking designs keep them secure during transport and use.
APPLICATIONS
Reliable caps and plugs protecting threads, tubes, and components from dust and damage.
View our most requested parts by applications.
SR1022 - Moss Caps
Protects automotive and EV charging tube ends from dust and damage during assembly.
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SR1055 - Ezeplugs
Protects EV and automotive lines with fast push-fit sealing for cleaner, safer builds
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SR1004 - Fluid Absorption Plug
Boosts seal reliability by absorbing fluid in automotive and EV charging assemblies
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SR1008 - Snap-Fit Plugs
Provides fast snap-fit sealing to protect automotive and EV charging ports from debris
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SR1022 - Quick-Fit and Quick-Release Caps
Enables fast fit-and-release sealing to protect automotive and EV charging lines from debris
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SR1000 - Tapered Caps and Plugs
Offers versatile tapered sealing to protect automotive and EV charging ports from debris
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SR1126 - Threaded Sealing Caps
Delivers secure threaded sealing to protect automotive and EV charging ports from leaks
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SR1010 - Push-In Plugs
Push-in sealing protects automotive and EV charging ports from dust, debris and fluids
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About Us
Why Buy From Essentra?
We've been demonstrating our expertise as a manufacturer for over 65 years and our components are found in almost any industrial application. With 2,500 experts around the world, we solve the challenges of customers every day in industries such as equipment manufacturing, automotive, industrial electronics, fabrication, medical devices, renewable energy, production machinery, construction and agriculture. In addition, we are able to support many emerging industries with our vast product range. We uniquely combine the expertise and flexibility of a manufacturer with the service and range of a distributor. This means we are able to support your project with whatever you need, when you need it.
Free CAD
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Manufacturing Capability
by 14 factory worldwide