Soft Black Silicone Sealing Compound for Telecom Cable Closure Entry Ports

25–30 Shore A adjustable RTV silicone gel/rubber for fiber optic splice closures, telephone cable closures and OSP cable entry sealing.

Designed for soft elastic sealing around cable entry and exit ports, helping closure manufacturers improve waterproof protection, compression fit and long-term sealing reliability.

Made for Telecom Cable Closure Entry Port Sealing

The Entry Port Is Often the Weakest Sealing Point

Softness

compresses around different cable diameters

Elastic recovery

maintains sealing force after assembly

Waterproof support

helps the closure sealing design resist moisture ingress

Production stability

consistent hardness, color and curing behavior in bulk orders

This is why we do not offer only a standard silicone gel.

We help match the silicone sealing compound to your closure structure and production process.

Key Properties

Item	Specification / Support
Material Type	Two-component RTV silicone sealing compound
Hardness	25–30 Shore A adjustable
Color	Black, or customized color
Sealing Behavior	Soft elastic compression sealing
Before Curing	Adjustable flow and viscosity
After Curing	Soft, elastic and stable
Pot Life	Customizable
Curing Time	Customizable
Application	Cable entry port, closure sealing, soft gasket-style sealing parts
Packaging	Sample, trial order and factory-use bulk packaging
Bulk Supply	Suitable for repeated production orders

Tuned to Your Cable Entry Design and Production Process

Different closure structures need different silicone behavior. We can adjust the formulation based on your actual sealing design.

What We Can Customize

To recommend the right grade, please send:

WHAT WE OFFER

Not Just for Lab Testing — Built for Repeat Production

For telecom closure manufacturers, a sample is only the first step. The real challenge is stable bulk production.

Our soft black silicone sealing compound supports:

Who Is This Distributor Page For?

If your product requires soft black silicone sealing around cable entry or exit ports, this material is worth testing.

Fiber optic splice closure manufacturers

Telecom cable closure manufacturers

Telephone cable accessory manufacturers

FTTx terminal box manufacturers

OSP network equipment producers

Cable entry sealing component manufacturers

Soft silicone gasket manufacturers

Telecom accessories distributors and private-label suppliers

FAQs

Is this a finished cable closure?

No. This is a two-component RTV silicone sealing material supplied to manufacturers of telecom closures, cable accessories, sealing parts and soft silicone components.

Can it be made around 25–30 Shore A?

Yes. The hardness can be adjusted around 25–30 Shore A according to your target requirement.

Can you adjust viscosity, pot life and curing time?

Yes. We can adjust the formulation according to your production process, filling method and curing requirement.

Can this material support waterproof closure design?

Yes, it can support waterproof sealing design when properly matched, processed and validated in the final closure structure. We recommend testing it with your actual entry port design.

Can you support bulk orders after sample approval?

Yes. This product type has proven bulk supply experience in telecom closure entry port sealing, including repeated large-volume orders after validation.

Need a Soft Black Silicone Sealing Compound for Telecom Cable Closure Entry Ports?

Send us your target Shore A, cable diameter range, entry port structure and curing requirement.

Our technical team will recommend a suitable grade for testing.

Soft Black Silicone Sealing Compound for Telecom Cable Closure Entry Ports

Made for Telecom Cable Closure Entry Port Sealing

Fiber optic splice closure entry port sealing

Underground and Buried Closure Applications

FTTx Terminal Box Cable Entry Sealing

Telecom Cable Closure Entry Port Sealing

Telecom Cable Closure Entry Port Sealing

Telecom Cable Closure Entry Port Sealing