Splice Closures
Dome and inline closures that keep splices sealed in chambers, on poles and underground.
In short
What is a fiber splice closure?
A splice closure is a sealed housing that protects fusion splices where two cables are joined or a cable branches. It holds the splices in organised trays, anchors each cable’s strength members, and keeps water and dust out, whether it sits in an underground chamber, on a pole or directly in the ground.
Where it’s used
- Joints between cable lengths on long routes
- Branching feeder cable into distribution cables
- Mid-span access points in FTTH distribution
- Repairs after a cable cut
Buying advice
How to choose a splice closure.
- 01
Count ports as well as splices
A closure can have room for the splices but too few cable entries for the branches you need. Check both against the design.
- 02
Match the seal to the location
Mechanical seals are quick to re-enter. Heat-shrink suits closures that will rarely be opened. Chambers that flood need a closure rated for long immersion.
- 03
Plan for re-entry
Distribution closures are reopened as customers are added. Trays that lift individually leave existing splices undisturbed.
Related services
What is the difference between a dome and an inline splice closure?
In a dome closure all cables enter through the base and the trays stack vertically, which suits chambers and poles. An inline closure takes cables from both ends and lies horizontally, which suits straight-through joints and tight spaces.
Can a splice closure be reopened?
Most modern closures are re-enterable. They can be opened to add or repair splices and resealed with the same seal or a replacement kit.
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