Sumitube„¢ W3B2 (4X) Heat Shrink Tubing - 5/16" Inside Diameter - 4:1 Shrink Ratio - Dual Wall Adhesive Lined - UL / SAE Recognized - Black

Product Features:

• Dual wall
• Flame-retarded
• Heat-shrinkable tubing with meltable adhesive for waterproofing of irregular-shaped objects
• SAE/UL recognized
• Flexible
• Waterproof sealing for electronic devices with irregular shapes or profiles
• Encapsulation for wire branches
• Insulation and protection for wire joints
• Material: Outer: Irradiated cross-linked flexible flame-retarded polyolefin, Inner: Meltable adhesive

Product Specifications:

• SAE-AS23053/4 Class 3 UL224
• File No. E75077
• Catalog No. SUMITUBE™ W3B2 (4X) or 891
• Rating temperature: 125℃
• Rating voltage: 600V

Click Here to See Technical Specification Data

Product Description:

This specialized heat-shrinkable tubing is designed for waterproofing and insulating electronic components with irregular shapes or profiles. It features a dual-wall construction with an outer layer made from irradiated cross-linked flexible flame-retarded polyolefin and an inner layer of meltable adhesive. This construction allows for flexible application and ensures effective waterproof sealing and insulation, particularly in environments where irregular-shaped objects or wire branches need encapsulation. The tubing is rated for a maximum temperature of 125℃ and can withstand voltages up to 600V. It complies with standards SAE-AS23053/4 Class 3 and UL224, certified under File No. E75077, and is cataloged under SUMITUBE™ W3B2 (4X) or 891. This product is ideal for applications requiring durable, flame-retarded, and waterproof protection of electronic components and wire joints, offering reliable performance in various industrial and electronic settings.

At Heatshrinktubing.com, we are dedicated to providing you with high-quality products and exceptional service. Please review our shipping and return policy below:

Shipping Policy:

• All orders are processed and shipped within [1] business day.
• We Partner with [Fedex, UPS & USPS] to ensure your order reaches you safely and promptly.
• Shipping costs are calculated at checkout based on the Dimensions, weight and destination of your order.

Return Policy:

• Customers have 30 days from the date of receiving their order to initiate a return.
• Please note that all cut-to-length orders (including but not limited to 10, 25, 50, 100-foot cuts) are non-returnable and considered final sale.
• Only uncut, full spool lengths are eligible for return.
• Returns must be shipped at the customer’s expense.
• To initiate a return, please contact our customer service team with your order number and reason for return.
• Returned items must be in their original condition and packaging.
• Once we receive and inspect the returned item, we will process a refund or exchange, depending on your preference.

Thank you for shopping with Heatshrinktubing.com!