
it is widely used for the application to seal wire and cable connections, 6:1 ratio make it cover the largest application range offered
in the industry.which can provide the good mechanical protection and excellent water and moisture proof.It is ideal used for buried insulation of the wire splicing, electrical connection and jacket repair.
Property | Test Method | Typical Data |
Bursting Strength | Test temp: 23±5°C | Min 15MPa |
Thermal Ageing Bursting Strength | 168 Hrs at 150±2°C(After free shrinkage) | Min 13.7MPa |
Dielectric strength | Electrode Surface Dia: 6 mm Wight: 50±2gms Voltage steps: 2 KV/20sec. | Min 12 KV/mm |
Split Resistance | Temp: 200±2°C, Test time: 23±3°C | No split Propagation |
Carbon Content UV Res of Out/layer | Heating rate: 20°C/min Gas flow rate: 300cc/min | Min 2.6±0.25% |
Cold Crack resistance | Test temp≤-40°C | No cracking |
Resistance to aggressive media Bursting Strength | Test media: Fuel oil, petroleum jelly Test temp: 70±2°C | Min 13.7MPa |
Environmental Stress cracking | 10% Igepal Co 630 solution immersion Time 30 days Test temp: 50±3°C | No cracking |
Temp. indicating paint conversion | Completely conversion | Completely conversion |
Hot melt adhesive | ||
Peel Strength | -PE at 23±2°C -PE at 23±2°C -Pb at 23±2°C | Min 100N/25mm |
Shear Strength At | 23±2°C | Min200N |
Corrosive Effect | Copper Mirror test Test time:16hrs Test temp:60±2°C | No effect |
Size | Max Cable Diam. (mm) | Min Cable Diam. (mm) | Lengths Supplied |
42/15 | 42 | 15 | 500-1000-1500-2000 mm |
50/15 | 50 | 15 | 500-1000-1500-2000 mm |
75/20 | 75 | 20 | 500-1000-1500-2000 mm |
93/25 | 93 | 25 | 500-1000-1500-2000 mm |
105/30 | 130 | 30 | 500-1000-1500-2000 mm |
135/34 | 135 | 34 | 500-1000-1500-2000 mm |
146/38 | 146 | 38 | 500-1000-1500-2000 mm |
164/42 | 164 | 42 | 500-1000-1500-2000 mm |
175/50 | 175 | 50 | 500-1000-1500-2000 mm |
198/55 | 198 | 55 | 500-1000-1500-2000 mm |
220/65 | 220 | 65 | 500-1000-1500-2000 mm |


The company has strong technical force with 20 years experience and advanced production equipment. We can supply (such as modified PE, PVDF, FEP, EPDM, Silicone, FKM, FEP, PTFE Etc materials)heat shrink tube and insulation tube. The products are widely used in the fields of electronic communication, automobile, high-speed rail, electric motor, aviation, medical and other fields, such as insulation, water-proof, electrostatic shielding, oil-resistant, chemical and high-temperature resistant Protection, etc. Our products have passed UL certification ,RoHS ,REACH.
We also can produce customized products or develop products with special requirements according to customer requirements, and we carry out our production according to ISO9001 and IATF16949 quality management system standards to ensure the stability and reliability of product quality.
1. who are we?
We are based in Shanghai, China, start from 2017,sell to North America(20.00%),South Asia(20.00%),Southeast Asia(15.00%),Western Europe(15.00%),South America(5.00%),Eastern Europe(5.00%),Mid East(5.00%),Northern Europe(5.00%),Eastern Asia(3.00%),Domestic Market(3.00%),Southern Europe(2.00%),Africa(00.00%),Central America(00.00%). There are total about 5-10 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Heat Shrink Tube/Heat Shrink Mould Part/Marking Sleeve/Cold Shrink Tube
4. why should you buy from us not from other suppliers?
Shanghai Wellco International Limited is a professional R & D, production, sales of special heat shrink Tube and other radiation crosslinking insulation materials manufacturers And the founder have the experience for the insulation more than 20years
5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,CIP,FCA,DDP,DDU,Express Delivery;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C,MoneyGram,PayPal,Western Union;
Language Spoken:English,Chinese, Japanese