FKM (Fluoroelastomer / Viton) vs PE-LLD (Linear Low-Density Polyethylene): 0% composition overlap. Significantly different materials serving different application areas.
FKM (Fluoroelastomer / Viton) vs PE-LLD (Linear Low-Density Polyethylene)
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-LLD (Linear Low-Density Polyethylene)
Linear low-density polyethylene — short-chain branching via copolymerization with alpha-olefins (butene, hexene, octene). Better puncture resistance, tear strength, and seal strength than PE-LD at same density. THE modern stretch wrap and food packaging film. Also used for agricultural film, liners, bags, and blown film. Largely replacing PE-LD in film applications.
| FKM (Fluoroelastomer / Viton) | PE-LLD (Linear Low-Density Polyethylene) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 1872 |
Mechanical properties
| Property | FKM (Fluoroelastomer / Viton) | PE-LLD (Linear Low-Density Polyethylene) | Unit |
|---|---|---|---|
| tensile_strength | 8–17 | 15–30 | MPa |
| elongation | 150–350 | 400–800 | % |
| hardness_shore_a | 60–90 | — | Shore A |
Compatibility Assessment
FKM (Fluoroelastomer / Viton) and PE-LLD (Linear Low-Density Polyethylene) 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-LLD (Linear Low-Density Polyethylene)?
FKM (Fluoroelastomer / Viton) and PE-LLD (Linear Low-Density Polyethylene) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace FKM (Fluoroelastomer / Viton) with PE-LLD (Linear Low-Density Polyethylene)?
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-LLD (Linear Low-Density Polyethylene)?
The main differences are in the following elements: overall alloying content. FKM (Fluoroelastomer / Viton) is a Polymers grade, while PE-LLD (Linear Low-Density Polyethylene) is a Polymers grade.
View full data for each material:
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.