Heat Shrink Tubing | PASS | Insulation & Protection Solutions for Multiple Industries
Product Overview
PASS heat shrink tubing is manufactured from premium cross-linked polyolefins and other specialized polymers. When heat is applied, our tubing shrinks radially to a predetermined size, forming a tight, protective seal. We offer a comprehensive range of shrink ratios, sizes, and material formulations to meet specific requirements for dielectric strength, temperature resistance, chemical resilience, and mechanical protection. Each batch undergoes rigorous quality control to ensure consistent shrinkage and performance.
Key Features & Benefits
● Excellent Environmental Sealing: Creates a tight barrier against moisture, chemicals, dust, and abrasion, significantly extending the life of wires and components.
● High Dielectric Strength: Provides superior electrical insulation, preventing short circuits and improving the safety and reliability of electrical assemblies.
● Strain & Abrasion Resistance: Reinforces connection points and protects against wear and tear from vibration, friction, and impact in demanding applications.
● Durable Identification: Available in a wide range of permanent colors for clear, color-coded wire and component identification that lasts the life of the product.
● Wide Operating Temperature Range: Performs reliably in both extreme cold and high-heat environments, with some formulations stable from -55°C to over 175°C.
● Flame Retardancy: Many of our standard tubes are compliant with UL 224 and VW-1 flame retardancy standards, enhancing safety in electrical applications.

Technical Specifications
● Materials: Cross-Linked Polyolefin (Standard), Polyvinylidene Fluoride (PVDF), Fluorinated Ethylene Propylene (FEP), Elastomeric (Adhesive Lined)
● Shrink Ratios: 2:1, 3:1, 4:1 (Standard)
● Operating Temperature Range: -55°C to 135°C (Standard Polyolefin); up to 175°C (Specialty Materials)
● Certifications & Compliance: Compliant with ROHS, REACH. Many grades meet UL, CSA, and MIL-STD-202 standards.
● Colors: Black, White, Red, Yellow, Green, Blue, and custom colors available.
● Recovery Temperature: Typically shrinks at 90°C - 130°C with a heat gun, oven, or other approved method.
Primary Multi-Industry Applications
PASS heat shrink tubing is an essential component in countless fields:
Automotive & Transportation: Protecting wire harnesses, battery cables, and fluid lines from abrasion, heat, and fluids in cars, trucks, and off-road vehicles.
Electronics & Appliances: Insulating solder joints, providing strain relief on cables, and bundling wires in consumer electronics, white goods, and IT equipment.
Aerospace & Defense: Meeting stringent requirements for weight, performance, and reliability in avionics, flight control systems, and military equipment (MIL-spec options available).
Industrial Manufacturing: Sealing and protecting connections, sensors, and components on machinery from coolants, oils, and physical damage.
Energy & Telecom: Waterproofing and insulating splice connections in telecommunications, solar energy systems, and power distribution.
Marine: Providing critical corrosion protection and insulation on boats and in maritime environments.
Why Choose PASS for Heat Shrink Tubing?
PASS combines deep material science expertise with precision manufacturing to produce heat shrink tubing that performs exactly as specified. We understand that protection is not a one-size-fits-all challenge. Our technical team can help you select the ideal material, wall thickness, and shrink ratio for your specific environmental and mechanical demands. We are committed to providing consistent quality, reliable supply, and expert support for projects of any scale, from prototyping to high-volume production.
Contact PASS today to request samples, discuss your specific application challenges, or get a quote on our high-performance heat shrink tubing.









