Fiber-Epoxy Combination Tubes for Hybrid Fuse Bodies
Layered vulcanized fiber and epoxy glass for combined arc and strength. Some links need the arc behavior of fiber on the inside and the strength of epoxy glass on the outside. We build combination tubes that layer these materials in one body. The layup is set from the clearing duty and the mechanical load. We review the drawing and propose the layer stack before production.
Technical specifications
| Material | Vulcanized fiber + epoxy glass layers |
| Purpose | Combined arc + mechanical duty |
| Form | Laminated / combination tube |
| Standard | ASTM D2491 (vulcanized fiber), IEC 60269 (fuse dimensions), UL 94 V-0 (flammability, material dependent). |
| Operating temperature | -40 °C to +105 °C |
| Dielectric strength | ≥ 20 kV/mm (per ASTM test method) |
💾 Datasheets & Test Reports
Download the technical data sheet for this product (PDF).
Applications by industry
- Hybrid fuse bodies: fibre outer barrel, epoxy bore liner
- Fuse links needing arc bore plus mechanical strong outer wall
- Switchgear bushing structures with mixed duty layers
- Transformer protection fuse assemblies
- Drop-out fuse bodies combining arc and strength zones
- Custom link bodies with machined external profiles
Why vulcanized fiber + epoxy glass for this application
Layering vulcanized fibre and epoxy glass lets one part carry both jobs: the epoxy liner faces the arc, the fibre shell adds toughness and saves weight/cost. Setting the two sleeves is a controlled assembly step, not two parts bolted on.
Layer bond and moisture barrier at the seam must be validated; a wicking interface undermines both. Confirm which grade sits on which face for your duty.
Standards: ASTM D2491 + ASTM D709, IEC 60269, UL 94 V-0.
Feature and remaining-wall review
Machining on Fiber-Epoxy Combination Tubes covers ID/OD grinding or turning plus CNC knurling, threading, slotting and cutting to drawing. Feature depth, edge distance and remaining wall are reviewed pre-quotation, and we confirm capability against your drawing instead of a blanket tolerance.
Inspection and traceability
We state the control plan with you. Batch traceability links raw material lot to finished part.
- First-article inspection (FAI) per your plan
- In-process dimensional checks at every station
- Batch certificate of conformance (COA) supplied on request
- Lot traceability to incoming material certificate
- Dielectric strength and insulation resistance testing available on request
Related components
Vulcanized Fiber + Fiberglass Tubes
Related insulation component from the WELLELE catalog.
Ceramic-Filled Epoxy Fiberglass Tubes
Related insulation component from the WELLELE catalog.
Custom Vulcanized Fiber Tubes
Related insulation component from the WELLELE catalog.
Common questions
How is Fiber-Epoxy Combination Tubes for Hybrid Fuse Bodies specified?
The duty comes first for Fiber-Epoxy Combination Tubes, not a catalogue figure. Tell us the voltage, the working temperature and what the assembly has to survive mechanically, and we will say which grade matches.
Which material is Fiber-Epoxy Combination Tubes for Hybrid Fuse Bodies manufactured from?
The material is Vulcanized fiber + epoxy glass layers. It is supplied as laminated / combination tube. Alternate grades can be quoted against your drawing.
Is a material certificate of analysis provided for Fiber-Epoxy Combination Tubes for Hybrid Fuse Bodies?
Material traceability travels with every batch of Fiber-Epoxy Combination Tubes in the certificate of analysis. First-article reports and dielectric testing are carried out to the method you specify.
Can Fiber-Epoxy Combination Tubes for Hybrid Fuse Bodies be produced to a customer drawing?
Fiber-Epoxy Combination Tubes is made to the bore, wall and cut length on your drawing, and pricing is quoted against that drawing plus the run quantity.
Engineering Guides & Selection Notes
Technical articles that go deeper on selecting and specifying Fiber-Epoxy Combination Tubes.
Get pricing for Fiber-Epoxy Combination Tubes for Hybrid Fuse Bodies
Send the drawing for Fiber-Epoxy Combination Tubes and state the annual volume. We check the grade against duty and tolerance, verify the bore, outside diameter, wall and any features of Fiber-Epoxy Combination Tubes, and reply with manufacturability notes and pricing.