How to Easily Install the Channel on Wrap-around Heat Shrink Sleeves ?
2025年6月28日The XAGA 1650 Buried Splice Closure System is a heat shrink closure system for nonpressurized telecom copper cables. Initially manufactured by Raychem, then Tyco, and now owned by Commscope, the XAGA 1650 buried splice closure system is primarily used in the telecommunications industry for sealing and encapsulating copper cable splices & joints.
The 1650 Series Buried Splice Closures are designed with a fiber reinforced heat-shrinkable wraparound sleeve with hot-melt adhesive coating on internal side to provide a watertight sealing to the cable sheath. This Buried Splice Closure restores the integrity of the cable sheath opening in a “non-pressurized” buried cable environment and can accommodate 25-3,600 pair cable splices.
Highlighted Features:
Heat-Shrink Technology: The closure uses a “SuperSleeve” sealing material—a composite, heat-shrinkable sleeve that wraps around the cable splice. When heat is applied, it shrinks tightly to seal the splice and the cable sheath.
Protection: It provides a durable, watertight, and mechanically strong seal, protecting the cable splices from moisture, impact, and abrasion in buried or underground environments.
Encapsulation: The system typically includes an innovative urethane delivery system to drive encapsulant (a sealant material) into the core of the cable splice for superior protection.
Application: It’s designed for use on nonpressurized copper telephone cables and can accommodate a wide range of cable sizes, from a small number of pairs (e.g., 25 pairs) up to large counts (e.g., 3600 pairs) depending on the specific kit size (e.g., XAGA 1650-A2, XAGA 1650-B4, etc.).
The differences bewteen XAGA 1650 & XAGA 500/530/550 Series
The XAGA 500, 530, and 550 are also part of the older XAGA series of heat-shrinkable, non-pressurized splice closures for copper telecommunication cables, but they differ significantly in their internal components, sealing technology, and intended use environment with XAGA 1650 series.
XAGA 500 Splice Closure System
Accessories Kit can be customized
XAGA 550 Heat Shrinkable Closure
Accessories Kit can be customized
Here’s a breakdown of the differences:
| Feature | XAGA 1650 | XAGA 500 | XAGA 530 | XAGA 550 |
| Primary Sealing Method | Encapsulation with Urethane Delivery System (UDS). | Heat-shrink with Hot-melt Adhesive. | Heat-shrink with Hot-melt Adhesive. | Heat-shrink with Hot-melt Adhesive. |
| Internal Splice Protection / Liner | Laminated Cardboard Liner for encapsulant delivery. | Flexible Laminated Cardboard Liner. | Non-Hygroscopic Profoam Liner (Plastic foam). | Metal (Aluminum) Canister (Two half shells). |
| Primary Advantage/Application | Superior Water Sealing & Encapsulation. Ideal for harsh, buried, or flooded applications. | Standard, All-Purpose Closure. Suitable for typical aerial, buried, or ducted applications. | High Humidity/Tropical Conditions. Excellent performance in high-moisture environments. | Highest Mechanical Protection & Very Large Closure Sizes. Ideal for high-risk physical damage environments. |
| Mechanical Protection | Superior (due to thick SuperSleeve and cured encapsulant). | Standard (Fiber-reinforced sleeve). | Standard (Fiber-reinforced sleeve). | Excellent/Highest (Fiber-reinforced sleeve PLUS metal canister). |
| Cable Pair Capacity | Up to 3600 pairs (with extended lengths). | Up to 800 pairs. | Up to 800 pairs. | Up to 3600 pairs. |
XAGA 1650 Ordering & Size Selection:
| Closure Size | Splice Opening (inches) | Min. Cable Diameter (inches) | Max. Cable Diameter (inches) | Approx. Cable Range (pairs) | Approx. Amount of Encapsulant Required |
|---|---|---|---|---|---|
| S | 12.0 | 0.35 | 1.10 | 6–25 | 500 grams |
| A | 12.0 | 0.48 | 2.20 | 25–100 | 750 grams |
| A2 | 21.0 | 0.48 | 2.20 | 25–200 | 1,500 grams |
| AA | 9.0 | 0.48 | 2.20 | 25–100 | 500 grams |
| B | 12.0 | 1.10 | 3.75 | 100–300 | 2,250 grams |
| B2 | 21.0 | 1.10 | 3.75 | 200–400 | 3,000 grams |
| C2 | 21.0 | 1.85 | 5.30 | 600–900 | 5,000 grams |
| D2 | 24.0 | 2.00 | 7.10 | 900–2400 | 10,000 grams |
| A4 | 37.0 | 0.48 | 2.20 | 25–400 | 2,500 grams |
| B4 | 37.0 | 1.10 | 3.75 | 200–600 | 4,500 grams |
| C4 | 37.0 | 1.85 | 5.30 | 600–1800 | 9,000 grams |
| D4 | 37.0 | 2.00 | 7.10 | 900–3600 | 15,000 grams |
Typical Applications
- Telephone and copper broadband cable splicing (distribution & access)
- Buried and duct-mounted splice points in rural/urban networks
- Network repairs and emergency restorations
- Branching points where one main cable splits to multiple subscribers
Key Differences Summarized:
- XAGA 500 vs. XAGA 530 vs. XAGA 550: These three share the same basic heat-shrink sleeve technology but are differentiated by their internal liner, which provides the specific protection profile:
- XAGA 500: Cardboard liner (standard).
- XAGA 530: Profoam liner (better for humidity).
- XAGA 550: Metal Canister (best for physical impact/mechanical abuse and high pair count).
- XAGA 1650 vs. XAGA 5XX Series: The XAGA 1650 is unique in that it is an encapsulatedclosure (using a liquid compound) for superior water sealing, while the XAGA 5XX series are not encapsulated but rely on the heat-shrink sleeve and adhesive for the seal. The XAGA 550, with its metal canister, competes with the 1650 on mechanical protection but uses a different sealing method.
Conclusion & Next Steps
The XAGA 1650 is a dependable choice for telecom operators and contractors that require durable, re-enterable copper splice protection for buried and duct installations. When planning deployments, evaluate environmental conditions (humidity, mechanical stress) and splice capacity to select between XAGA 1650, 500, 530, or 550.
Want help choosing the right closure for your project? Contact TianyuLink for technical guidance, OEM alternatives, or sample trials of our XAGA-class copper splice closures.