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73 insulation components across seven families. Every part is made to drawing — click through for material grades, specifications and RFQ. Not sure which family? Check the FAQ or send the drawing and we will point you to the right page.

💾 WELLELE Product Catalog 2026

All insulation tubes, laminates, rods, washers and fuse components in one PDF.

Download Full Catalog (PDF)

LV/MV/HV Fuse Tubes (14 parts)

Fuse bodies, arc-quenching liners and end caps in vulcanized fiber, ceramic-filled epoxy glass, melamine and phenolic kraft.

Custom Vulcanized Fiber Tubes

Rolled and machined vulcanized fiber (fish paper) fuse bodies, thin-wall and small-diameter, to your drawing.

Ceramic-Filled Epoxy Fiberglass Tubes

Arc-resistant, high-track-resistance tubes for current-limiting and HV fuse links.

Medium & High Voltage Fuse Link Bodies

Cylindrical fuse bodies for MV/HV links, with end-cap interfaces machined to spec.

Small-Diameter Thin-Wall Fuse Tubes

Thin-wall vulcanized fiber and epoxy tubes for compact cylindrical links.

Phenolic Kraft Paper Tubes

Resin-impregnated kraft paper tubes for liners, forms and low-cost fuse bodies.

G5/G9 Melamine Tubes

Glass-melamine tubes with high mechanical strength and arc resistance.

Vulcanized Fiber + Fiberglass Tubes

Fiber inner with fiberglass reinforcement for stronger thin-wall bodies.

Canvas Epoxy Fuse Tubes

Phenolic cotton canvas tubes for cost-effective mechanical fuse bodies.

Knurled & Screwed Vulcanized Fiber Tubes

Vulcanized fiber tubes with knurl, thread or shoulder for end termination.

Synthetic Arc-Quenching Fuse Tubes

Engineered arc-quenching liner materials for high clearing energy.

Fiber-Epoxy Combination Fuse Tubes

Layered vulcanized fiber and epoxy glass for combined arc resistance and structural strength.

Small-Diameter Thin-Wall Fuse Link Bodies

Cylindrical fuse link bodies in thin-wall vulcanized fiber and epoxy for compact links.

Vulcanized Fiber Composite Tubes

Glass-reinforced vulcanized fiber tubes for arc-facing and high-impact fuse bodies.

Cold Shrink Cable Accessories (6 parts)

Pre-expanded EPDM/silicone cold-shrink kits with mastic or adhesive seals for LV through 35kV cable, installed without heat or open flame.

Medium-Voltage 15kV Cold Shrink

8.7/15kV cold shrink terminations no heat, EPDM recovery, stress control for 15kV XLPE.

12/20kV Cold Shrink Cable Joints

Cold shrink 12/20kV inline joints and terminations with mastic seal and stress control.

18/20kV Cold Shrink Terminations

18/20kV class cold shrink cable terminations, spiral-core recovery without heat.

26/35kV Cold Shrink Cable Accessories

26/35kV cold shrink terminations and joints, silicone EPDM for medium-voltage outdoor.

0.6/1kV Cold Shrink (LSY Series)

Low-voltage 0.6/1kV cold shrink splice kits for underground, street-light and PV string cables.

Cold Shrink Overview & All Voltages

Browse 0.6/1kV through 35kV cold shrink kits — no heat, no open flame, waterproof recovery.

Epoxy Fiberglass Tube (7 parts)

Wound and pultruded epoxy glass tubes for insulation, structural and high-voltage casing parts.

Filament-Wound Epoxy Tubing

Wound to a fiber angle set by your load path, then machined to shape.

Shaped HV Casing Parts (FR-4/G10)

Machined casing, bushing and insulator shapes from wound epoxy glass.

PV Insert Epoxy Fiberglass Tubes

Insulator inserts for PV and busbar terminal assemblies.

Current-Limiting Fuse Tubes

Bodies for current-limiting links, built to the clearing spec.

Filament-Wound Rocket Tubes

Composite motor-case tubing wound to pressure and thrust load.

Fiber Sanding Discs (Fiber Backing)

Vulcanized-fiber backing discs for bonded abrasive wheels.

Filament-Wound Epoxy Tubing

Pultruded/wound epoxy tubes cut and machined to custom length and OD for high-voltage insulation.

Flexible & Heat-Shrink Tubing (30 parts)

Polyimide, Mylar, PTFE, silicone-coated fiberglass and polyolefin shrink sleeving for 800V EV, ESS and power cable.

800V Busbar Heat-Shrink Tubing

Rated wall and recovery for 800V EV and energy-storage busbars.

ESS Busbar Insulation Sleeve

Insulation for battery racks and ESS busbar links.

Power Cable Heat-Shrink Tubing

Joint and termination sleeve rated across LV and MV cable voltages.

Double-Wall Heat-Shrink Tube

Inner adhesive layer seals out moisture on cable and harness joints.

PVC Heat-Shrink Sleeving

Low-cost shrink sleeving for color coding and light insulation.

Teflon Heat-Shrink Tubing

Shrink PTFE for chemically aggressive and high-temperature service.

PTFE Tubes

Pure and filled PTFE tube for fluid, electrical and semiconductor duty.

PTFE Tubing for Medical Devices

Medical-grade PTFE liners and shafts with tight ID control.

Teflon Tube for Automotive High-Temp Cable

PTFE sleeving for engine-bay and powertrain wiring.

Polyimide Capillary Tube for Sensors

Thin-wall polyimide capillary for thermocouple and RTD protection.

Mylar Shrink Tubing

Polyester shrink tubing for phase insulation and wrap.

Mylar Sleeve for Flange Bolt Insulation

Bolt sleeves that break the galvanic path at flanged joints.

Acrylic Fiberglass Sleeving

Braid-and-coat sleeving for flexible electrical insulation.

Silicone-Coated Fiberglass Sleeving

Higher-temperature flexible sleeving for harness and components.

Silicone Resin Fiberglass Sleeve

Resin-impregnated glass sleeve with a sealed, smooth wall.

Silicone-Coated Fire Sleeve

High-temperature fire sleeve for hydraulic lines and harnesses.

Busbar Conjunction Box Series

Insulated boxes and covers for busbar joints and taps.

Double-Wall 3:1 / 4:1 Heat Shrink

Three-quarter and four-quarter shrink ratio dual-wall adhesive tubing for irregular and large joints.

Double-Wall Adhesive Heat Shrink Tube

Inner adhesive liner melts to seal moisture out on cable and harness joints.

800V Busbar Heat-Shrink Tubing

Rated wall 800V heat-shrink sleeves for EV and energy-storage busbar covers and links.

15kV Busbar Heat-Shrink Casing (MPG10)

8/15kV busbar joint insulation sleeves, shrink-fit casing for 15kV switchgear.

35kV Busbar Heat-Shrink Casing (MPG35)

26/35kV heat-shrink busbar casing and joints for MV switchgear and terminations.

Power Cable Heat-Shrink Tubing

Joint and termination sleeves rated across LV and MV power-cable voltage classes.

PFA Heat-Shrink Tubing 2:1

Chemically inert PFA shrink sleeving for aggressive chemical and high-purity service.

Polyimide Tubing

High-temperature polyimide sleeving for continuous use up to 260 C.

Mylar Fastener Bolt Thread Sleeves

PET polyester bolt sleeves that break the galvanic path and protect fastener threads.

Mylar PET Film Insulation Tube

Thin-wall polyester (Mylar) tubing for phase insulation and electrical film layers.

Mylar Bolt Sleeve (M6 to M36)

Flanged-bolt insulation sleeves M6 through M36, breaks galvanic corrosion at joints.

Flange Isolation Kit Sleeves

Complete flange-bolt isolation sleeves and hardware for pipeline and busbar galvanic isolation.

Insulation Rods (4 parts)

Machined and pultruded rods for switchgear operating rods, spacers and structural insulators.

ECR Epoxy Fiberglass Rods

Moisture-resistant pultruded rods for outdoor and switchgear duty.

Phenolic Cotton Cloth Laminated Rod

Machinable phenolic rods for mechanical insulating parts.

Vulcanized Fiber (Fish Paper) Rod

Fish-paper rods for arc-facing and formed insulator parts.

Beech Dowel / Coffin Stick Rods

Hardwood dowels and coffin sticks for fixtures and forming.

Laminated Sheets (8 parts)

Cut, punched and machined insulating plates for panels, barriers and structural parts.

GPO-3 Polyester Glass Sheet

Track-resistant, V-0 sheet for busbar supports and barriers.

G5/G9 Glass Melamine Sheet

High-strength, arc-resistant sheet for switchgear parts.

Phenolic Cotton Cloth Laminated Sheet (3230)

General industrial phenolic plate for mechanical and electrical parts.

Bakelite Plate (Orange / Black)

Paper-phenolic plate for panels, tags and mechanical parts.

SMC Sheet Molding Compound

Moldable sheet compound for large insulated enclosures and parts.

Vulcanized Fiber (Fish Paper) Sheet

Fish-paper sheet for arc-facing and formed insulation parts.

Phenolic Cotton Laminated Sheets

Industrial-grade phenolic-impregnated cotton sheets, punched and machined to drawing.

Washers & Spacers (2 parts)

Stamped and machined insulating washers and spacers for terminal and busbar assemblies.

G10 / FR-4 Epoxy Glass Washers

Precision epoxy glass washers for terminal and busbar insulation.

Vulcanized Fiber Washers

Arc-resistant washers and spacers punched or machined to drawing.