Acrylic Fiberglass Sleeve

Description

Premium Electrical Insulation Solution

SIDA’s Acrylic Coated Fiberglass Sleeve is engineered for superior performance in electrical and thermal insulation applications. The product consists of high-quality E-glass fiber braided into a flexible tubular form and impregnated with a dielectric acrylic resin through a specialized heat-treatment process. This manufacturing approach creates a durable, conformable sleeve that maintains its dielectric strength even under mechanical stress and tight bends.

Key Performance Features

1. Exceptional Thermal Stability

Rated Class F with continuous operating temperature from -40°C to +155°C
Withstands short-term thermal overloads up to 180°C for emergency conditions
Maintains flexibility across the entire temperature range without cracking or degradation

2. Superior Electrical Properties

Initial average dielectric strength up to 7,000V (Grade A)
Multiple voltage rating options: 1.5kV, 2.5kV, 4kV, and 7kV
Maintains dielectric integrity on all bends and in high-vibration environments
Compatible with all magnet wire coatings and insulating varnishes (polyesters, epoxies, phenolics, formvar)

3. Mechanical & Chemical Durability

Excellent flexibility and push-back characteristics for easy installation
High cut-through and abrasion resistance protects against mechanical damage
Superior chemical resistance to oils, solvents, acids, and most organic compounds
Self-extinguishing flame retardant properties meeting UL 1441 standards
Halogen-free formulation ensures low toxicity during combustion

4. Quality Assurance

UL Approved Component (File No.: E310670)
RoHS and REACH compliant
Meets MIL-I-3190F military specifications
Manufactured to ASTM D-578 fiber specifications
12-month shelf life with proper storage conditions

Data Tables

Indicator Name	Unit	Index Value
Exterior	/	Uniform coating, smooth surface, no defects affecting product performance
Inner Diameter and Wall Thickness	mm	Inner Diameter				Wall Thickness
		Standard	Tolerance			403		404
			Two-way	Unidirectional (+)		Min (μm)	Max (μm)	Min (μm)	Max (μm)
		0.3–0.8	0.1	0.2		0.25	0.5	0.2	0.5
		1	0.15	0.3		0.25	0.75	0.2	0.75
		1.5	0.15	0.3		0.35	0.75	0.2	0.75
		2	0.2	0.4		0.35	0.75	0.2	0.75
		2.5	0.2	0.4		0.4	0.75	0.2	0.75
		3	0.25	0.5		0.4	0.75	0.2	0.75
		4–6	0.25	0.5		0.5	0.75	0.3	0.75
		8	0.5	1		0.5	0.75	0.3	0.75
10–25	0.5	1		0.65	1.2	0.4	0.9
Breakdown Voltage	kV ≥	Numerical Value			403		404
		At Room Temperature			Median	Lowest	Median	Lowest
		Projectile slot or straight mandrel / 100mm foil electrode			5.7	4.3	3.3	2.5
		Under High Temperature			2.9	2.3	1.9	1.4
		After Damp Heat			1.7	1.3	1.4	1.1
Insulation Resistance	Ω	≥ 1.0 × 10⁹
Flame Spread	S	Burning time ≤ 60 s
Flame Spread	—	Any one of the three samples indicates that the flag should not burn. Cotton shall not be ignited by burning or hot particles or drops.
Solder Heat Resistance	—	Pass (only for nominal inner diameter ≤ 5 mm hose)
Bending After Heating	—	No visible cracks or coating shedding (test temperature: 180 ± 3 °C)
Bending at Low Temperature	—	No visible cracks or coating shedding (test temperature: ≤ −15 to −18 °C)
Paint Resistance to Hydrolysis	—	No migration of coating; no adhesion between hose and paper or test piece; no discoloration of paper
Storage Period	—	12 Months

Note:The product specifications provided are for reference purposes only. Please refer to the actual product for final specifications. We also offer various sizes and thicknesses to meet your specific needs. For further customization, please contact us.

Application Scenarios

1. Electric Motors & Generators

Provides critical insulation for motor lead wires, coil connections, and stator windings. The sleeve’s 155°C rating and high dielectric strength (up to 7kV) make it ideal for F-class motor systems, protecting against voltage spikes and thermal cycling in industrial motors, servo motors, and power generators.

2. Transformers & Inductive Components

Used for insulating primary and secondary lead wires, tap changers, and internal connections in dry-type and oil-immersed transformers. Excellent compatibility with transformer varnishes and impregnation resins ensures system integrity.

3. Home Appliances & HVAC

Protects internal wiring in high-temperature appliances including:

Ovens & Stoves: Thermal protection near heating elements
Dishwashers & Washers: Moisture and chemical resistance
Air Conditioners: Compressor and fan motor leads
Lighting Fixtures: Ballast and LED driver wiring

4. Automotive & Transportation

Suitable for engine compartment wiring, sensor leads, and battery cable insulation. Good resistance to automotive fluids (oil, coolant, fuel) and under-hood temperatures. Meets abrasion resistance requirements for wiring harnesses.

5. Welding Equipment & High-Voltage Apparatus

The 7kV grade version is specifically designed for welding machines, plasma cutters, and high-voltage test equipment where exceptional dielectric strength is critical. Maintains performance in high-vibration environments.

6. Aerospace & Marine

Lightweight, halogen-free construction makes it suitable for aircraft wiring systems and marine electrical panels where smoke toxicity standards are stringent. Excellent UV and ozone resistance for outdoor/exposed applications.

7. Switchgear & Control Panels

Provides organized, insulated protection for bus bar connections, control wiring, and power distribution circuits in industrial control panels and breaker cabinets.

8. Renewable Energy Systems

Used in solar inverters, wind turbine generators, and battery energy storage systems (BESS) for high-temperature, high-voltage DC wiring insulation.

Testing Standards & Certifications

International Standards Compliance

UL Standards (Underwriters Laboratories)

UL 1441: Coated Electrical Sleeving – confirms thermal endurance and electrical performance at 155°C
UL Approved Component: File No. E310670 – recognized in UL insulation systems

IEC Standards (International Electrotechnical Commission)

IEC 60684-3: Specification for Flexible Insulating Sleeving – covers dimensional, electrical, and thermal requirements
IEC 60085: Thermal Evaluation and Classification of Electrical Insulation – Class F (155°C) rating

Military & Aerospace

MIL-I-3190F: Military Specification for Electrical Insulation Sleeving – ensures mechanical durability and chemical resistance

ASTM Standards

ASTM D-578: Standard Specification for Glass Fiber Strands – governs base fiber quality and mechanical properties

Environmental & Safety

RoHS Directive 2011/65/EU: Restriction of Hazardous Substances – certified lead-free and cadmium-free
REACH Regulation (EC 1907/2006): Registration of chemical substances
Halogen-Free: Meets IEC 60754-1/2 for low smoke and corrosive gas emission

Test Performance Results

Thermal Shock: Passes 180°C for 48 hours with no coating cracks or peeling
Cold Bend: Withstands -70°C testing per IEC 60684-2-14
Flammability: Self-extinguishing within 60 seconds (UL VW-1 method)
Dielectric Strength: Maintains >90% of initial value after thermal aging
Abrasion Resistance: >10,000 cycles per ASTM D6770 (Taber test)

Frequently Asked Questions (FAQs)

Q1: What is the difference between acrylic and silicone coated fiberglass sleeves?
A: Acrylic sleeves are rated for Class F (155°C) continuous operation, while silicone sleeves typically support Class H (200°C) and higher. Acrylic offers excellent flexibility and chemical resistance at a more economical price point, making it ideal for applications up to 155°C. Silicone is preferred for extreme temperature environments (>180°C) but at higher cost.

Q2: How do I select the correct voltage grade for my application?
A: Choose based on your system’s working voltage with safety margin: Grade C-2 (1.5kV) for low-voltage controls (<600V), Grade C-1 (2.5kV) for standard industrial (600V-1kV), Grade B (4kV) for medium-voltage equipment (1kV-3kV), and Grade A (7kV) for high-voltage applications like welding or transformer leads.

Q3: Can this sleeve be used in outdoor applications?
A: Yes, the modified acrylic resin provides good UV and ozone resistance for outdoor use. However, for extreme UV exposure (>5 years direct sunlight), consider silicone-coated variants. The halogen-free formulation ensures safe performance in enclosed outdoor enclosures.

Q4: What is the proper cutting method to prevent fraying?
A: Use a sharp, hot knife cutter to simultaneously cut and seal the edges. Alternatively, wrap the cut area tightly with electrical tape before cutting with scissors, then apply a small amount of acrylic lacquer to the cut end. The sleeve is designed to resist unraveling but proper cutting technique ensures clean installation.

Q5: Is SIDA’s acrylic fiberglass sleeve compatible with vacuum pressure impregnation (VPI) systems?
A: Absolutely. The acrylic coating is specifically formulated for compatibility with polyester, epoxy, and phenolic VPI resins. It maintains its dielectric properties and adhesion after impregnation and curing cycles, making it an UL-approved component for most insulation systems.

Q6: What is the minimum bend radius for installation?
A: The sleeve maintains full dielectric strength at bend radii down to 3x the nominal diameter for sizes <10mm, and 2x diameter for sizes >10mm. Its excellent flexibility and push-back characteristics allow installation in tight spaces without performance degradation.

Q7: How does moisture affect the electrical properties?
A: The acrylic resin provides hydrolytic stability with minimal moisture absorption (<0.5% by weight). Dielectric strength remains >80% of dry values even after 96 hours at 95% relative humidity, meeting IEEE 117 moisture resistance requirements.

Q8: What packaging options are available for bulk orders?
A: Standard spool lengths are 200m (0.5-4.5mm ID), 100m (5-12mm ID), and 50m (14-35mm ID). We offer custom spooling, cut-to-length pieces (1m segments), and bulk cartons/pallets for OEM customers. All packaging includes moisture barrier wrap for extended shelf life .

Why Choose SIDA’s Acrylic Fiberglass Sleeve?

✓ Industry-Leading Quality: Manufactured under ISO 9001 quality management with 100% dielectric testing
✓ Certified Safety: Full UL, RoHS, REACH, and MIL-spec compliance for global markets
✓ Technical Support: Dedicated engineering team for material selection and application guidance
✓ Inventory Availability: Stocked in 12 standard sizes with custom production capability
✓ Competitive Pricing: Direct manufacturer pricing with volume discounts available
✓ Rapid Delivery: Standard products ship within 3-5 business days; custom orders in 10-15 days