NBR (Nitrile Rubber) vs PPSU (Polyphenylsulfone): 0% composition overlap. Significantly different materials serving different application areas.
NBR (Nitrile Rubber) vs PPSU (Polyphenylsulfone)
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.
PPSU (Polyphenylsulfone)
Polyphenylsulfone — highest-performance sulfone polymer. Better impact and chemical resistance than PSU and PEI. Withstands >1000 steam autoclave cycles at 134°C without property loss. Tg 220°C. Transparent amber, colorable. Inherently flame-retardant (V-0). FDA/USP Class VI/ISO 10993 compliant. Trade name: Radel (Solvay/Syensqo), Ultrason P (BASF). Used for reusable medical instrument trays, surgical instrument handles, dental tools, aircraft interior panels, and hot-water plumbing fittings.
| NBR (Nitrile Rubber) | PPSU (Polyphenylsulfone) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 527-1 |
Chemical composition (wt%) — Pro
| Element | NBR (Nitrile Rubber) | PPSU (Polyphenylsulfone) | Overlap |
|---|---|---|---|
| Butadiene | 50–82% | — | — |
| Acrylonitrile (ACN) | 18–50% | — | — |
| Base Polymer (Polyphenylsulfone) | — | 99–99.9% | — |
Mechanical properties — Pro
| Property | NBR (Nitrile Rubber) | PPSU (Polyphenylsulfone) | Unit |
|---|---|---|---|
| Tensile Strength | 7–24 | 55–75 | MPa |
| Elongation | 200–600 | 30–60 | % |
| 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 PPSU (Polyphenylsulfone) 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 PPSU (Polyphenylsulfone)?
NBR (Nitrile Rubber) and PPSU (Polyphenylsulfone) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace NBR (Nitrile Rubber) with PPSU (Polyphenylsulfone)?
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 PPSU (Polyphenylsulfone)?
The main differences are in the following elements: overall alloying content. NBR (Nitrile Rubber) is a Polymers grade, while PPSU (Polyphenylsulfone) 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.