What is the dielectric strength?

The dielectric strength is 23kv/mm, ensuring excellent electrical insulation.

What applications is this tubing suitable for?

It is suitable for insulation and sealing in electrical, telecom, and industrial cable splices.

Silicone Rubber Cold Shrink Tubing for Communication Cable Connector

Name: Silicone Rubber Cold Shrink Tubing for Communication Cable Connector
Brand: Shanghai Wellco International Limited
SKU: 2100819275

Shanghai, ChinaShanghai Wellco International Limited

US$1.38

10-999 Pieces

US$0.40

1,000+ Pieces

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

Application

Insulators, Electrical Base, Shell, for Electrical, Telecom and Industrial Applications

Color

Black, Grey, Other Colors

Model NO.

W-CST

Material

Rubber, Silicone Rubber

Maximum Voltage

<10KV

Thermal Rating

200 200

Sample

Available

Operating Temperature

-60~200c

Rated Voltage

1kv

Feature

Very Flexible, Flame-Retardant

Type

Insulation Sleeve & Tube

Chemistry

Organic Insulation

Certification

ISO9001

Brand

Wellco

Transport Package

Standard Package

Origin

China

HS Code

39173200

Production Capacity

100000

Key features

IP67 Waterproof Sealing: Provides reliable waterproof and sealing performance for cable splices.

Flame Retardant V-0: Meets UL94 V-0 flame retardant standards for enhanced safety.

High Dielectric Strength: Offers excellent electrical insulation with 23kv/mm dielectric strength.

Easy Cold Shrink Installation: Simple installation process requiring no heat source or tools.

Customization Available: Custom operating temperature, voltage, and sample availability.

Certified Quality: ISO9001 certified with UL, RoHS, and REACH compliance.

High Flexibility: Very flexible material with 980% elongation at break.

Company profile

Shanghai Wellco International Limited

Shanghai, China

Business Type: Manufacturer/FactoryExport Year: 2017-05-22 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤1.46h CertifiedTerms of Payment: LC, T/T, D/P, etc. CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR

AI-Powered supplier vetting

SummarySHANGHAI WELLCO INTERNATIONAL LIMITED is presented as a supplier of heat-shrink and related tubing products, with automotive, electrical, medical, and other product applications. The available information indicates multiple management and product certifications, more than 10 production lines, 21–30 quality-control staff, annual heat-shrink-tube output of 10,000,000 meters, and export sales representing 90% of total sales. It reports off-peak lead times within 15 working days and peak-season fulfillment of one month. Trading records show repeated heat-shrinkable-tubing transactions with RAYCHEMRPG PRIVATE LIMITED and a transaction involving YAZAKI INDIA PRIVATE LIMITED. However, the slices do not provide sufficient evidence to assess after-sales service, financial credibility, product-development innovation, or customization capability. The supplier’s registration information appears in 2025, but the records do not establish the full operating history of the company.

Supplier typeThe supplier is identified as SHANGHAI WELLCO INTERNATIONAL LIMITED and is associated with heat-shrink tubing, cold-shrink tubing, connector gel boxes, automotive shrink products, and related items. Its stated business covers automotive, electrical and electronics, medical, sporting goods, and other sectors, and it has self-operated import/export rights with 90% of sales reportedly from exports.

CertificationsThe basic products are stated to have passed UL, SGS, ISO9001, ISO14001, and IATF16949-related standards or certifications, while the supplier management-system certifications are listed as TS 16949 and ISO 9001. This provides explicit evidence of relevant quality and management certification coverage.

Production capacityThe supplier reports more than 10 production lines, 21–30 quality-control staff, annual heat-shrink-tube output of 10,000,000 meters, off-peak lead time within 15 working days, and peak-season fulfillment within one month. These stated figures explicitly support substantial production capacity and defined fulfillment capability.

Client casesTrade records associate the supplier with YAZAKI INDIA PRIVATE LIMITED and show repeated heat-shrinkable-tubing transactions with RAYCHEMRPG PRIVATE LIMITED across several 2025 records. These named buyer records provide concrete customer evidence, although the slices do not establish order scale, duration of relationships, performance ratings, or references.