Volsun Customized Excellent Base Station Waterproof Cold Shrink Tube with Mastic for Small Spaceand Dense Joint Operation

Volsun Customized Excellent Base Station Waterproof Cold Shrink Tube with Mastic is designed for reliable protection in tight, crowded telecom and electrical environments. Built for small spaces and dense joint operations, this cold shrink tube provides a fast, efficient way to weatherproof and insulate cable joints, connectors, and terminations without the need for heating tools or complex installation steps

The product features a high-performance elastomeric sleeve pre-expanded over a removable core. During installation, simply slide the sleeve into position and remove the core to allow the tube to recover and form a tight, uniform seal around cables and components. The integrated mastic ensures excellent adhesion and fills irregular gaps, preventing moisture ingress, dust ingress, and corrosion. This combination of cold shrink technology and mastic creates a durable, long-lasting barrier against environmental stress

Volsun’s cold shrink tube is tailored to meet the demands of base stations and other dense equipment racks where space is limited. Its compact design and flexible material conform neatly to irregular shapes and tight bundles, minimizing bulk while maintaining full coverage. Because it requires no heat or special equipment, installation is quick and safe—even in confined or elevated locations—reducing downtime and lowering labor costs

Durability is a key advantage of this product. The elastomer resists UV exposure, ozone, salt spray, and wide temperature variations, ensuring stable performance in harsh outdoor and indoor environments. The mastic remains tacky and resilient over time, preserving a waterproof seal that blocks contaminants and maintains electrical integrity. The tube’s mechanical strength protects against abrasion and vibration, making it suitable for both permanent installations and maintenance work

Volsun provides customization options to fit various cable sizes, joint configurations, and application requirements. Options include different lengths, diameters, mastic formulations, and color coding to match site standards. Each unit is designed for straightforward field use, with clear marking and an intuitive removal sequence for the core. This reduces installation errors and ensures consistent sealing performance across multiple crews and sites

The Volsun Customized Excellent Base Station Waterproof Cold Shrink Tube with Mastic is a practical, high-quality solution for protecting cable joints and connectors in tight, dense installations. Its easy, tool-free application, robust environmental resistance, and customizable options make it an ideal choice for telecom base stations, utility networks, and any project requiring dependable, compact waterproofing in limited space

Product Description

RUBLS-SILIC Silicone Rubber Cold Shrink Tube with Mastic

The built-in mural casing is a new base station waterproof product that adds mural structure at both ends of the high-quality silicone cold shrink casing and forms a tight structure between the casing and the cable under the permanent radial pressure of the casing. It is very suitable for small space and dense joint operation, and is currently the most ideal, mature and reliable waterproof solution

Support customization, ODM & OEM available

Features:

*Shrink Ratio : 4:1 or Suits for an extensive range of cable sizes because of the shrinkage

*Retains its resiliency and pressure even after prolonged years of ageing and exposure, seals tight against moisture and water

* Good weather resistance, ozone ageing, ultraviolet and salt mist corrosion resistance, performs stably under long-period exposure to the sun

*Excellent tearing strength, cut with a knife, cut will not continue to expand the cement does not solidify, easy to set, high sealing reliability, good effect

*No overflow, with buffer belt design, long service life

*Standard color: Gray, black, other colors

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Technical Performance

Item	Typical value	Test Method
Shore Hardness	40±5A	GB/T 531-2008
Tensile Strength	≥9.0MPa	GB/T 528-2009
Elongation at Break	＞800%	GB/T 528-2009
Tear Strength	≥35kN/m	GB/T 529-2008
Breakdown strength	≥20	ASTMD149
Volume resistivity	≥1×10 15	ASTMD257

Dimensions

Type	pecification	Min Cable Outer Diameter mm	Max Cable Outer Diameter mm	Full Recovered Length mm	Application
VS28-4.5	Ф28	5.0	20.0	110	1/2 N connector
VS32-5	Ф32	7.0	24.0	125	4.3-10 connector Cable TV-12 terminal connector
VS35-5	Ф35	9.5	27.0	125	Cable TV-12 terminal connector
VS40-5.5	Ф40	11.0	30.0	140	DIN 1/2 connector Cable TV 540QR terminal connector
VS40-8	Ф40	11.0	30.0	203	1/2 to 7/8 intermediate connector
VS40-11	Ф40	11.0	30.0	280	Cable TV 540QR intermediate connector
VS45-6	Ф45	11.0	36.0	150	DIN 7/16”connector

Size is available to customize

Company Show

Suzhou Volsun Electronics Technology Co., Ltd. was founded in 2006. We keep focusing on the R&D, production and sales in insulation, sealing & protection solutions
Volsun has a modern quality management system, which has passed a series of quality system certification such as IATF16949, ISO9001 etc
Up to now, Volsun cooperated with customers from 88 countries, we offer suitable sealing, waterproof solutions for some well-know enterprises in communication, Automobile, Power industry etc

Certifications

Quality Assurance

Our management and employees are committed to providing the highest quality products and services. This ongoing commitment is recognized through ISO9001, ISO14001, ISO45001, IATF16949, UL, ROHS, and REACH certifications
We employ rigorous quality assurance standards to guarantee our customers the highest quality standards
We also have the ability to be your just-in-time supplier. This helps you keep your production lines running and provides better cash flow management by eliminating inventory requirements
Because every manufacturer has different needs and challenges to overcome, we are committed to providing exceptional service to each of our customers. We will work with you to provide the best solution to meet your needs

Abroad Exhibition

Packing & Delivery

Trade terms	FOB, EXW, CIF, DDU, DDP, CFR
Payment terms	T/T, L/C, Negotiable
Supply capability	1,000,000 pieces per month
Lead time	Usually 2-3 working days
Shipment	Express, Air, Sea
Port	Shanghai, Ningbo, Shenzhen
Sample availability	Yes
Sample time	Usually 1-2 days
Packaging	Normal: Plastic bag & Carton & Pallet Special: Customized packing

FAQ

Q 1. How long is the payment term
A: We accept T/T 50% deposit and 50% balance against B/L or L/C copy at sight, also accept Western Union, VISA and Paypal

Q 2. What is the normal lead time for product orders

A: The average lead time for prototype/first piece is 7~10 days, if tooling is involved, the lead time for production tooling is 10 days, and the average production time after sample approval is 2-3 weeks

Q 3. What is your standard packaging
A: All goods will be packed in cartons and loaded on pallets. Special packing methods are acceptable when needed

Q 4. Can you tell us the monthly production capacity of your products
A: It depends on the model, we produce more than 1500 tons of rubber materials per month

Q 5. What kind of certificates do you have
A1: We have ISO9001:2015, IATF16949:2016, ISO14001:2015, ISO45001:2018 certified
A2: We have various rubber compounds approved by UL, ROHS and REACH

Q6: How to check the quality of bulk order
A1: We provide pre-production samples to all customers before mass production if needed
A3: We accept third-party inspection, such as SGS, TUV, INTERTEK, BV, etc

Q 7: Can you provide customized service
A: Yes, we accept customization and can produce products in different sizes, packaging, colors according to requirements