NBR (Nitrile Rubber) vs PEEK GF30: 0% composition overlap. Significantly different materials serving different application areas.
NBR (Nitrile Rubber) vs PEEK GF30
Side-by-side chemical composition and mechanical property comparison.
Overview
NBR (Nitrile Rubber)
Nitrile butadiene rubber (Buna-N) — THE oil and fuel resistant elastomer. ACN content (18-50%) determines the oil resistance vs low-temp flexibility tradeoff. Higher ACN = better oil resistance but stiffer at low temp. The most widely used seal material worldwide. Used for O-rings, fuel hoses, gaskets, hydraulic seals, oil seals, and nitrile gloves. Not suitable for ozone, UV, or polar solvents (ketones, esters). HNBR variant for higher heat resistance.
PEEK GF30
PEEK with 30% short glass fiber reinforcement. Dramatically increased stiffness (E-Mod 11 GPa vs 4.1 unfilled) and strength (UTS 160 vs 100 MPa) with reduced elongation and creep. Maintains PEEK's chemical resistance and high-temp capability (continuous 250°C). Trade names: Victrex 450GL30, TECAPEEK GF30 (Ensinger), KetaSpire GF30 (Solvay). Used for structural brackets, pump housings, valve seats, bearing cages, and semiconductor wafer handling where higher stiffness than unfilled PEEK is needed.
| NBR (Nitrile Rubber) | PEEK GF30 | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 527-1 |
Chemical composition (wt%) — Pro
| Element | NBR (Nitrile Rubber) | PEEK GF30 | Overlap |
|---|---|---|---|
| Butadiene | 50–82% | — | — |
| Acrylonitrile (ACN) | 18–50% | — | — |
| PEEK (Base Polymer) | — | 68–72% | — |
| Glass Fiber Reinforcement | — | 28–32% | — |
Mechanical properties — Pro
| Property | NBR (Nitrile Rubber) | PEEK GF30 | Unit |
|---|---|---|---|
| Tensile Strength | 7–24 | 155–165 | MPa |
| Elongation | 200–600 | 2–3 | % |
| hardness_shore_a | 40–90 | — | Shore A |
| Density | |||
| continuous_service_temp | |||
| Elastic Modulus | |||
| hdt_1.8mpa |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
NBR (Nitrile Rubber) and PEEK GF30 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 NBR (Nitrile Rubber) the same as PEEK GF30?
NBR (Nitrile Rubber) and PEEK GF30 have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace NBR (Nitrile Rubber) with PEEK GF30?
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 NBR (Nitrile Rubber) and PEEK GF30?
The main differences are in the following elements: overall alloying content. NBR (Nitrile Rubber) is a Polymers grade, while PEEK GF30 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.