Product Categories
Custom Plastic Parts
Custom Rubber Parts
Custom PU Parts
Battery Terminal Rubber Cap
Custom Battery Terminal Rubber Cap, Rubber Wire Caps
Battery terminal rubber caps provide critical electrical insulation and environmental sealing to prevent short circuits, corrosion, and accidental contact. Featuring a snug-fit tapered design with reinforced walls for secure retention and quick visual identification of polarity (optional color coding).
Flexiparts manufactures fully custom battery rubber caps with no stock limitations—tailored to your specifications for inner diameter, height, wall thickness, durometer hardness, and color. Please send us your samples or drawings.
Common Battery Terminal Cap Rubber Materials
Material selection directly impacts insulation performance and service life in harsh environments. We supply rubber wire caps in multiple elastomers optimized for electrical and chemical resistance:
- EPDM – Superior weather/ozone resistance for outdoor battery systems
- Silicone – Wide temperature range (-60°C to +200°C) for extreme conditions
- NR – High flexibility and tear strength for frequent installation/removal
- NBR – Oil/fuel resistance for automotive and marine applications
- CR – Flame retardancy for industrial safety compliance
- Custom compounds – Available for UL/CE certification requirements
How To Work with Us
The key to great custom parts is collaboration. As a custom molding manufacturer, our enginnerss will stay connected with you throughout the process, and deliver products that meet your expectations.
- Send us your 2D/3D files or product concept, for an accurate quote, please send us materials, order quanity and surface requirement.
- We review your design,and send you a clear cost within 24 hours.
- Our tooling team builds the mold to your specifications, then send you T1 samples for confirmation.
- Once sample approved, we run full production under strict quality control
- Your finished parts are packaged securely and shipped to your location on time.
Related Products
- More Rubber Cap
Start Your Project!
Custom Plastic & Rubber Parts Manufacturer Solutions
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Injection Molding
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Overmolding
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Insert Molding
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CNC Machining
Need custom rubber, plastic, or polyurethane parts? FlexiParts offers prototyping and on-demand, low to high-volume production of high-quality, durable components. Whatever your needs, we deliver reliable custom parts on time and within budget. Start your project with us today!

