NBR (Nitrile Rubber) vs PPS (unfilled): 0% composition overlap. Significantly different materials serving different application areas.
NBR (Nitrile Rubber) vs PPS (unfilled)
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.
PPS (unfilled)
Polyphenylene Sulfide — semi-crystalline high-performance thermoplastic. Broadest chemical resistance of any engineering plastic — no known solvents below 200°C. Inherently flame-resistant (V-0 without additives, LOI 44%). Very low moisture absorption (<0.02%). Brittle in unfilled form — usually glass-fiber reinforced for structural use. Trade names include Ryton (Solvay), Fortron (Celanese), Torelina (Toray), Durafide (Polyplastics). Used for chemical pump components, filter bags, electrical insulation, and as base resin for GF40 compounds.
| NBR (Nitrile Rubber) | PPS (unfilled) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 10350 |
Mechanical properties
| Property | NBR (Nitrile Rubber) | PPS (unfilled) | Unit |
|---|---|---|---|
| tensile_strength | 7–24 | 65–85 | MPa |
| elongation | 200–600 | 3–6 | % |
| hardness_shore_a | 40–90 | — | Shore A |
Compatibility Assessment
NBR (Nitrile Rubber) and PPS (unfilled) 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 PPS (unfilled)?
NBR (Nitrile Rubber) and PPS (unfilled) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace NBR (Nitrile Rubber) with PPS (unfilled)?
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 PPS (unfilled)?
The main differences are in the following elements: overall alloying content. NBR (Nitrile Rubber) is a Polymers grade, while PPS (unfilled) is a Polymers grade.
Related Comparisons
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.