3 mm ST Black Fiber Optic Connector Dust Cap Cover
This fiber connector cover from JINSHANG TECH prevents contamination and misalignment of open optical ports on equipment and patch cords.
JINSHANG TECH supplies the unit as a production item; fiber diameter, jacketing, connectorization and length can be confirmed against the specification before ordering.
Key Characteristics
- IP68 ingress protection for damp or wash-down environments
- Housing/jacket color: Black
- Operating temperature range: -55~80Degree
- Snap-fit design that stays in place during shipping and storage
- Supplied in bulk for inventory and spare-parts kits
- Reusable and easy to remove and replace during service
Typical Applications
The unit is commonly used for protection of open TOSLINK/HFBR/POF equipment ports, shipping and storage of unterminated patch cords and harnesses, and maintaining clean optical interfaces in industrial cabinets. The result is a reliable, repeatable build that tolerates the routing, vibration and repeated handling typical of production installations.
Frequently Asked Questions
Q: Which connector do these fit? A: Match the cap to the connector profile shown in the specification; common versions cover TOSLINK, HFBR Versatile Link and POF ports.
Q: Do caps replace cleaning? A: No — they prevent contamination, but the end face should still be inspected and cleaned before mating.
Q: Why do optical connectors need dust caps? A: Even a small dust particle on the ferrule can block the light path and raise insertion loss, so open ports should always be capped when not mated.
Q: Are the caps reusable? A: Yes. The caps are designed to be removed and replaced repeatedly during normal service while retaining a snug fit.
For the matching Versatile Link and HFBR assemblies, visit the FEV Electronics fiber catalog at www.fevelectronics.com.