FKM (Fluoroelastomer / Viton) vs PE-HD: 0% composition overlap. Significantly different materials serving different application areas.
FKM (Fluoroelastomer / Viton) vs PE-HD
Side-by-side chemical composition and mechanical property comparison.
Overview
FKM (Fluoroelastomer / Viton)
Fluoroelastomer — THE high-temperature and chemical-resistant rubber. Outstanding resistance to oils, fuels, acids, and solvents at temperatures up to 200°C (short-term 230°C). Fluorine content (64-70%) determines chemical resistance. Trade names: Viton (Chemours), Tecnoflon (Solvay), Dai-El (Daikin). 5-10x more expensive than NBR. Used for aerospace fuel seals, chemical process seals, automotive fuel injector O-rings, semiconductor processing, and any seal exposed to aggressive chemicals at high temperature.
PE-HD
High Density Polyethylene — the highest-volume plastic globally (>30M tons/year). Linear chains with minimal branching give higher density and strength vs LDPE. Excellent chemical resistance, FDA/food-safe, very low moisture absorption, and good impact resistance down to -30°C. Used for pipes, bottles, containers, fuel tanks, cutting boards, playground equipment, and geomembranes.
| FKM (Fluoroelastomer / Viton) | PE-HD | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 1872 |
Chemical composition (wt%) — Pro
| Element | FKM (Fluoroelastomer / Viton) | PE-HD | Overlap |
|---|---|---|---|
| Vinylidene Fluoride (VDF) | 30–60% | — | — |
| Hexafluoropropylene (HFP) | 25–45% | — | — |
| Tetrafluoroethylene (TFE) | 0–30% | — | — |
| Base Polymer (Polyethylene) | — | 99.5–99.9% | — |
Mechanical properties — Pro
| Property | FKM (Fluoroelastomer / Viton) | PE-HD | Unit |
|---|---|---|---|
| Tensile Strength | 8–17 | 25–38 | MPa |
| Elongation | 150–350 | 100–1000 | % |
| hardness_shore_a | 60–90 | — | Shore A |
| Density | |||
| continuous_service_temp | |||
| Yield Strength | |||
| Elastic Modulus | |||
| Melting Point | |||
| Glass Transition Temp (Tg) | |||
| Water Absorption (24h) |
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FKM (Fluoroelastomer / Viton) and PE-HD have significantly different compositions (0% overlap). These materials are not interchangeable and serve different application areas.
Automated assessment based on composition analysis
Frequently Asked Questions
Is FKM (Fluoroelastomer / Viton) the same as PE-HD?
FKM (Fluoroelastomer / Viton) and PE-HD have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace FKM (Fluoroelastomer / Viton) with PE-HD?
Generally not recommended. The compositions differ significantly (0% overlap). These materials have different alloying concepts and are intended for different applications.
What is the difference between FKM (Fluoroelastomer / Viton) and PE-HD?
The main differences are in the following elements: overall alloying content. FKM (Fluoroelastomer / Viton) is a Polymers grade, while PE-HD is a Polymers grade.
Related Comparisons
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Data provided for reference only. Always verify against the applicable specification for critical applications.
All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.