O-ring Navilock 12680 Black Silicone 6.5 mm

The Navilock 12680 O-ring is a small, black silicone sealing element with a 6.5 mm cross-section designed for reliable sealing in a variety of repair and maintenance applications. Manufactured from durable silicone, this O-ring resists aging and provides consistent elasticity and sealing performance across a wide temperature range. Its compact size and neutral colour make it suitable for visible and concealed installations where a discreet, long-lasting seal is required.

Advantages

Silicone construction offers good resistance to ozone, UV and many environmental factors while maintaining flexibility. The 6.5 mm dimension provides a stable sealing surface for static and low-dynamic joints. Black colour reduces visibility in exposed assemblies and helps mask minor surface marks. The material’s resilience contributes to extended service life and reduced need for frequent replacements.

Suitable for

• Sealing small fittings and housings in electronic enclosures
• Gaskets in plumbing repair where silicone compatibility is required
• Replacement seals for mechanical assemblies and connectors
• Insulating or vibration-damping applications with space constraints

Key specifications

• Material: silicone
• Colour: black
• Cross-section/diameter: 6.5 mm
• Form: round O-ring
• Typical properties: elastic, resistant to ageing and UV

How to use

Select an O-ring with matching cross-section and groove dimensions to ensure proper compression and sealing. Clean mating surfaces and lubricate the O-ring with a compatible silicone lubricant or recommended assembly fluid to ease installation and reduce the risk of twisting. Carefully stretch the O-ring over the component without sharp bending; avoid exposing it to solvents or chemicals that can degrade silicone. After assembly, check for even compression and perform a pressure or leak test appropriate to the application.

Recommendations

Store the O-ring away from direct sunlight and high heat to preserve elasticity. For applications involving aggressive chemicals, high pressure, or extreme temperatures, verify silicone compatibility and consider materials with specific chemical or thermal resistance if needed.