2: 1 Ratio Flame Retardant Thin Wall Heat Shrink Polyolefin Tubing
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Product Highlights
- Flame Retardant & Halogen Free: Eco-friendly cross-linking polyolefin material, non-smoke, non-toxic, and flame-retardant.
- High Voltage Insulation: Passed UL, RoHS, Reach certifications for 300V and 600V with breakdown strength up to 2500V.
- Extensive Size Range: Inner diameter available from 0.5mm to 250mm with various wall thickness options.
- Multiple Color Options: Available in Black, Red, Green, White, Blue, Orange, and Purple.
- Comprehensive Certifications: Certified by UL, ISO9001, IATF16949, RoHS, and Reach standards.
- Free Sample Availability: Samples are freely supplied; express fee paid by buyer.
Product Attributes
- Customization
- Available
- Application
- Automotive Harnessing, Communication industry, Machine Protection, Wire & Cable Protection
- Color
- Black, Red, Green, White, Blue, Orange, Purple So
- Model NO.
- SBD-SWHF
- Flexibility
- Flexible
- Inner Diameter
- 0.5~250mm
- Material
- Polyolefin
- Maximum Voltage
- 2500V
- Thermal Rating
- 125
- Thickness
- Different Dia., Different Wall Thickness
- Product Name
- 2:1 Ratio Flame Retardant Thin Wall Heat Shrink Po
- Sample
- Freely Supplied
- Certificate
- UL, ISO9001, IATF16949
- Environment Friendly
- RoHS, Reach
- Keywords
- Heat Shrink Polyolefin Tubing
- Transport Package
- Pack by Spool, and Carton
- Specification
- 0.5~250mm
- Trademark
- SUNBOW
- Origin
- Shenzhen, China
- HS Code
- 3917310000
- Production Capacity
- 7000000m/Month
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Product Description
2. Shrink ratio: 2:1
3. Shrink temperature: 84ºC ~ 120ºC


Property | Unit | Standard | Test Method | |
Tensile Strength | MPA | ≥10.4(before aging) | ASTM D 2671 | |
≥7.3(after aging) | 158ºC*168h | |||
Breakage Elongation (%) | % | ≥200(before aging) | ASTM D 2671 | |
≥100(after aging) | 158ºC*168h | |||
Heat Shock | - | no sticking& no cracking | UL 224, 250ºC*4h | |
Cold Blend | - | no cracking | -30ºC*4h | |
Breakdown Strength | KV/mm | ≥15 | ASTM D 149 | |
Dielectric Withstand | 600V | - | UL 224 | no breakdown for 2500V, 60s |
300V | - | UL 224 | no breakdown for 1500V,60s | |
Volume Resistivity | Ω.cm | ≥1×1014 | IEC 60093 | |
Corrosion Performance | - | UL 224 | 158ºC*168h | |
Copper Stability | - | UL 224 | 158ºC*168h | |
Flammability | - | UL 224 | VW-1 | |


Inner Diameter | As Supplied (mm) | After Recovery(mm) | Standard Package | Application Range(mm) | |
Inner Diameter | Inner Diameter | Wall Thickness | (m/spool) | ||
Φ0.6 | 0.9±0.2 | ≤0.40 | 0.33±0.10 | 400 | 0.4~0.7 |
Φ0.8 | 1.1±0.2 | ≤0.50 | 0.33±0.10 | 400 | 0.6~0.8 |
Φ1.0 | 1.5±0.2 | ≤0.65 | 0.36±0.10 | 400 | 0.75~0.9 |
Φ1.5 | 2.0±0.2 | ≤0.85 | 0.36±0.10 | 400 | 0.95~1.4 |
Φ2.0 | 2.5±0.2 | ≤1.00 | 0.45±0.10 | 400 | 1.1~1.8 |
Φ2.5 | 3.0±0.2 | ≤1.30 | 0.45±0.10 | 400 | 1.35~2.3 |
Φ3.0 | 3.5±0.2 | ≤1.50 | 0.45±0.10 | 400 | 1.6~2.7 |
Φ3.5 | 4.0±0.2 | ≤1.80 | 0.45±0.10 | 400 | 1.85~3.2 |
Φ4.0 | 4.5±0.2 | ≤2.00 | 0.45±0.10 | 400 | 2.1~3.6 |
Φ4.5 | 5.0±0.2 | ≤2.30 | 0.56±0.10 | 200 | 2.35~4.0 |
Φ5.0 | 5.5±0.2 | ≤2.50 | 0.56±0.10 | 200 | 2.6~4.5 |
Φ5.5 | 6.0±0.2 | ≤2.75 | 0.56±0.10 | 200 | 2.85~5.0 |
Φ6.0 | 6.5±0.2 | ≤3.00 | 0.56±0.10 | 200 | 3.1~5.4 |
Φ7.0 | 7.5±0.3 | ≤3.50 | 0.56±0.10 | 100 | 3.7~6.3 |
Φ8.0 | 8.5±0.3 | ≤4.00 | 0.56±0.10 | 100 | 4.2~7.2 |
Φ9.0 | 9.5±0.3 | ≤4.50 | 0.56±0.10 | 100 | 4.7~8.0 |
Φ10 | 10.5±0.3 | ≤5.00 | 0.56±0.10 | 100 | 5.2~9.0 |
Φ11 | 11.5±0.3 | ≤5.50 | 0.56±0.10 | 100 | 5.7~10 |
Φ12 | 12.5±0.3 | ≤6.00 | 0.56±0.10 | 100 | 6.2~11 |
Φ13 | 13.5±0.3 | ≤6.50 | 0.56±0.10 | 100 | 6.7~12 |
Φ14 | 14.5±0.3 | ≤7.00 | 0.70±0.10 | 100 | 7.3~13 |
Φ15 | 15.5±0.4 | ≤7.50 | 0.70±0.10 | 100 | 7.8~14 |
Φ16 | 16.5±0.4 | ≤8.00 | 0.70±0.10 | 100 | 8.3~15 |
Φ17 | 17.5±0.4 | ≤8.50 | 0.70±0.10 | 100 | 8.8~16 |
Φ18 | 19.0±0.5 | ≤9.00 | 0.70±0.10 | 100 | 9.3~17 |
Φ20 | 22.0±0.5 | ≤10.00 | 0.83±0.15 | 100 | 10.4~19 |
Φ22 | 24.0±0.5 | ≤11.00 | 0.83±0.15 | 100 | 11.4~21 |
Φ25 | 26.0±0.5 | ≤12.50 | 0.90±0.15 | 50 | 12.8~24 |
Φ28 | 29.0±0.5 | ≤14.00 | 0.90±0.15 | 50 | 14.4~29 |
Φ30 | 31.5±1.0 | ≤15.00 | 1.00±0.15 | 50 | 16~29 |
Φ35 | 36.5±1.0 | ≤17.50 | 1.00±0.15 | 50 | 18~34 |
Φ40 | 41.5±1.0 | ≤20.00 | 1.00±0.15 | 50 | 21~39 |
Φ45 | 46.5±1.0 | ≤22.5 | 1.00±0.15 | 25 | 23.5~44 |
Φ50 | ≥50 | ≤25.0 | 1.10±0.15 | 25 | 26~49 |
Φ60 | ≥60 | ≤30.0 | 1.20±0.15 | 25 | 35~55 |
Φ70 | ≥70 | ≤35.0 | 1.30±0.20 | 25 | 40~65 |
Φ80 | ≥80 | ≤40.0 | 1.30±0.20 | 25 | 45~75 |
Φ90 | ≥90 | ≤45.0 | 1.30±0.20 | 25 | 50~85 |
Φ100 | ≥100 | ≤50.0 | 1.30±0.20 | 25 | 55~95 |
Φ120 | ≥120 | ≤60.0 | 1.30±0.20 | 25 | 65~115 |
Φ150 | ≥150 | ≤75.0 | 1.30±0.20 | 25 | 80~145 |
Φ180 | ≥180 | ≤90.0 | 1.30±0.30 | 25 | 95~175 |
Φ210 | ≥210 | ≤105.0 | 1.30±0.30 | 25 | 110~205 |
Φ230 | ≥230 | ≤115.0 | 1.30±0.30 | 25 | 120~225 |
Φ250 | ≥250 | ≤125.0 | 1.30±0.30 | 25 | 130~240 |
We specialize in design and manufacture fiberglass sleeves, heat shrink tube, silicone rubber tube, PVC pipe, PTFE tube, expandable sleeving, corrugated conduit etc.



We are the No.1 fiberglass sleeve coated silicone resin in China.
Fiberglass yarn and silicone resin,PVC,silicone,PE,PET. RoHS,Reach,UL certificated
Packed by roll then rolls by carton. Also can cut and pack as requested.
In Shenzhen. The loading port here is Yantian or Shekou.
More than 50.
More than 5 desingers,.
We have 8 QC team.
can ship right now if in stock.5 - 7 working days if the items are out of stock.
Yes,it is free but the express fee should be paid by buyer.
7 - 15 working days.
L/C at sight, T/T in advance,Western Union,Paypal.
About the Supplier
This supplier has been audited by BV. Verify the report on the official BV website with ID "MIC-ASR222527". Items marked "" are certified.
Company Profile
Shenzhen Sunbow Insulation Materials MFG. Co., Ltd, established in 2003, mainly engaged in the research & Development, manufacture and sale of various insulation sleeving. And we had leading R& D engineers, had a batch of advantageous equipment and testing instruments. Now we had excess of 10 independent patents, gained high-tech enterprise in Shenzhen.
Our main products include fiberglass sleeving, silicone rubber tube, PVC tube, heat shrink tube, PTFE/FEP tube and so on. All our fiberglass sleeving had been obtained the UL and CSA certificates in 2010 (Cert No: E333178--UZIQ2, VW-1 for flame resistance requirement & E333177--UZFT2/8, 200C, 600V for thermal resistance requirement); Our heat shrink tube, silicone rubber tube and PTFE tube had been obtained UL certificate in 2013 (Cert. No. E360625); PVC tube had been obtained the UL certificates In in Apr. 2014 (Cert. No. E467953); In May. 2012, our products successfully had been passed CQC test (Certificate No. CQC12134072554). It provides security for domestic and foreign home appliance supplier in Chinese mainland market. Till now, we are the only one fiberglass sleeving manufacturer which obtained UL, CSA, and CQC certificates. Also we are the only one manufacturer which can provide certificates for all color and maximum size range (from 0.55mm to 25.4mm). Also all our products are in conformance with the European RoHS requirements, furthermore, based on European new requirements, we re-applied and obtained German PFOA and PFOS certificates and European Reach report.
Our products are widely used in H& N Motor, home appliance, electric heating equipment, Lighting, electronic instruments, wiring harness, transformer, power adapter, communication equipment, high/low voltage power distribution complete equipment, petrochemical industry, coal-mining industry, electric system and space flight and aviation area etc.
Due to business expansion, our factory moved to Gongming street, Guangming New District in Shenzhen. It occupies nearly 10, 000 square meters. We successfully passed ISO9001: 2015 and IATF16949 international quality management system, now ISO14001 system is also pushing.
Over the years, we have been enjoying good reputation in our industry by adhering to the business philosophy of "Faith, Practical, and Responsive. " We also get supports and trusts from many international well-known enterprises. Thanks greatly for so many help and cooperation from our partnership, such as Philips, Whirlpool, Conair, Emerson, GE, Black & Decker, SEB, ABB, Siemens, Electrolux, Toshiba, Panasonic, Hitachi, Mitsubishi, Samsung, China's Huawei, Haier, CRRC, and many other famous enterprises' trust directly and indirectly; Furthermore, as the second level supplier for automotive system, Sunbow products have been indexed in IMDS. We also have successfully become the qualified supplier for Volvo, Land-Rover, GM, Honda, Suzuki, Nissan, Hyundai and so on.
We know that our task is long-term and arduous, but opportunities are aside with challenges. We "Sunbow" people will take on a new look and work hard to provide our customers the best quality products, first-rate service, the most competitive price and the most reliable technical supports. Return to our customers, return on the community.
About Our Factory & Business Background
- Address
- Sunbow Industrial Park, No. 8, 2nd Industrial Zone, Xiacun Community, Gongming, Guangming New District, Shenzhen, Guangdong, China
- Terms of Payment
- LC, T/T, PayPal, Western Union, ****** payment
- International Commercial Terms(Incoterms)
- FOB, EXW, CIF
- Average Lead Time
-
Peak Season Lead Time: one month
Off Season Lead Time: within 15 workdays - Nearest Port
- shenzhen, guangzhou, hongkong
Our Production Capability & Technical Expertise
Our Industry Experience & Global Business Record
- Export Year
- 2008-04-01
- Main Markets
- North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, Mid East, Eastern Asia, Western Europe
FAQ
- Why choose us?
- We are the No.1 fiberglass sleeve coated silicone resin in China.
- What material do you use?
- Fiberglass yarn and silicone resin, PVC, silicone, PE, PET. RoHS, Reach, UL certificated.
- How's the package?
- Packed by roll then rolls by carton. Also can cut and pack as requested.
- Where is your factory?
- In Shenzhen. The loading port here is Yantian or Shekou.
- How many employees are there in your company?
- More than 50.
- How many people are there in your R&D department?
- More than 5 designers.
- How do you control the quality?
- We have 8 QC team. Each process has one QC. We check carefully before shipment.
- What's your sample lead time?
- Can ship right now if in stock. 5 - 7 working days if the items are out of stock.
- Is the sample free charge?
- Yes, it is free but the express fee should be paid by buyer.
- What's your mass production lead time?
- 7 - 15 working days.
- What's your payment terms?
- L/C at sight, T/T in advance, Western Union, Paypal.
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