NBR (Nitrile Rubber) vs PP-C (Polypropylene Copolymer): 0% composition overlap. Significantly different materials serving different application areas.
NBR (Nitrile Rubber) vs PP-C (Polypropylene Copolymer)
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.
PP-C (Polypropylene Copolymer)
Polypropylene copolymer (random or block) — better impact resistance at low temperatures than PP homopolymer (PP-H). Random copolymer: excellent clarity for packaging. Block copolymer: high impact for automotive bumpers, containers, and household appliances. Trade names: Moplen (LyondellBasell), Hostalen (LyondellBasell). THE automotive interior/exterior polymer alongside ABS.
| NBR (Nitrile Rubber) | PP-C (Polypropylene Copolymer) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 1133 |
Chemical composition (wt%) — Pro
| Element | NBR (Nitrile Rubber) | PP-C (Polypropylene Copolymer) | Overlap |
|---|---|---|---|
| Butadiene | 50–82% | — | — |
| Acrylonitrile (ACN) | 18–50% | — | — |
| Base Polymer (Polypropylene) | — | 85–95% | — |
| Ethylene Co-Monomer | — | 5–15% | — |
Mechanical properties — Pro
| Property | NBR (Nitrile Rubber) | PP-C (Polypropylene Copolymer) | Unit |
|---|---|---|---|
| Tensile Strength | 7–24 | 20–30 | MPa |
| Elongation | 200–600 | 100–600 | % |
| hardness_shore_a | 40–90 | — | Shore A |
| Density | |||
| continuous_service_temp | |||
| Elastic Modulus | |||
| Melting Point |
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Sign up free — 3 comparisons/day freeCompatibility Assessment
NBR (Nitrile Rubber) and PP-C (Polypropylene Copolymer) 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 PP-C (Polypropylene Copolymer)?
NBR (Nitrile Rubber) and PP-C (Polypropylene Copolymer) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace NBR (Nitrile Rubber) with PP-C (Polypropylene Copolymer)?
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 PP-C (Polypropylene Copolymer)?
The main differences are in the following elements: overall alloying content. NBR (Nitrile Rubber) is a Polymers grade, while PP-C (Polypropylene Copolymer) 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.