Direct answer
Review filling inside each loose tube separately from the interstitial cable core. A manufacturer's dry-core design may retain tube gel; a totally dry design can use dry waterblocking in both locations. Obtain the cross-section, material locations, preparation instructions and relevant evidence instead of relying on the label.
Separate tube interiors from interstitial spaces
Lightera's technical explanation distinguishes gel-filled, dry and totally dry constructions, retaining tube gel in its dry example. Treat this as a manufacturer's terminology example and check the quoted part.
Use this guide for outdoor trunks, building entries and preterminated branches. Its subject is preparation and termination, not connector IP classification.
| Label | Location to review | Supplier clarification |
|---|---|---|
| Gel-filled | Tube interiors and core spaces | Locations requiring approved cleaning |
| Dry-core | Core material and any remaining tube gel | Explicit tube-interior condition |
| Totally dry | Dry blocking in both locations | Actual materials and applicability |
| Gel-free | Complete cable or named portion | Scope and delivered revision |
Dry waterblocking still needs material control
Lightera describes water-swellable blocking materials. Corning PGS101 documents a specific gel-free loose-tube design. These examples do not establish identical waterblocking or mechanical performance for every dry cable.
Mark tube, yarn and tape locations on a cross-section, then review preparation with the termination party. Eliminating gel cleaning does not remove fiber identification or assembly controls. Do not trim or substitute blocking components without an approved procedure.
Compare the same delivered work
A per-meter price omits preparation, branching and end protection. Request quotations for matching lengths, termination counts and documentation, identifying factory work and site work separately.
Use sample records to compare tools, preparation steps, cleaning locations and rework. A manufacturer's demonstration time does not become a labor allowance for a different construction. For preterminated delivery, review the transition from bulk cable to branch protection and connectors.
Materials and delivery checklist
| Input | Record | Purpose |
|---|---|---|
| Cross-section | Tube/core/strength-member locations | Define the dry claim |
| Material list | Blocking material and revisions | Avoid trade-name-only identification |
| Preparation | Cleaning, branching and waste handling | Assign tools and responsibilities |
| Sample record | Actual part, procedure and end checks | Compare equivalent work |
| Packaging | End seal, cutting and resealing | Preserve delivered condition |
PGS101 still requires sealed shipping ends for its design. Retain the applicable end-protection procedure rather than treating totally dry as permission to leave an end exposed. Define responsibility for resealing after permitted field cuts.
Review material substitutions
Record whether a change affects tube fill, core fill or both. Ask the responsible party which existing evidence remains applicable and which preparation or environmental checks need review.
Acceptance concerns an identified configuration. Do not attach another cable's temperatures, test limits or certifications to a new part. This guide adds no ARRANEX dry-cable specification.
Procurement FAQ
- Does dry always mean no gel? Check the supplier's definition, including tube interiors.
- Does gel-free waive waterblocking evidence? A material label cannot waive agreed validation.
- Is totally dry always faster to prepare? Compare actual samples and equivalent work scopes.
- May a cut end remain unsealed? Follow the product's protection and resealing instructions.
- What belongs in the initial RFQ? Cross-section, material locations, termination scope, preparation instructions and relevant evidence.
Related products and reading
- Preterminated breakout configurations
- Waterblocking versus connector protection
- Fiber organization and branching
- Preterminated procurement checklist
Related pages support requirements review. Materials, service conditions, performance and delivery scope depend on mutually confirmed specifications.
Contact an engineer with drawings and validation requirements
Sources and review date
Reviewed on 2026-10-18. Source dates remain separate from the review date. Manufacturer examples explain terminology only; procurement tables are editorial recommendations, not ARRANEX specifications or certifications.
Sources checked: 2026-10-18