NBR (Nitrile Rubber) vs PP-H (Polypropylene Homopolymer): 0% composition overlap. Significantly different materials serving different application areas.
NBR (Nitrile Rubber) vs PP-H (Polypropylene Homopolymer)
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-H (Polypropylene Homopolymer)
Polypropylene Homopolymer — the lightest common engineering plastic (0.905 g/cm³). Excellent chemical resistance (esp. to acids and bases), good fatigue resistance (integral living hinges), and low moisture absorption. Becomes brittle below 0°C. Used for chemical tanks, HVAC ducts, pump housings, food containers, automotive battery cases, and medical lab equipment.
| NBR (Nitrile Rubber) | PP-H (Polypropylene Homopolymer) | |
|---|---|---|
| Material Number | — | — |
| Category | Polymers | Polymers |
| Standard | ISO 37 | ISO 10350 |
Mechanical properties
| Property | NBR (Nitrile Rubber) | PP-H (Polypropylene Homopolymer) | Unit |
|---|---|---|---|
| tensile_strength | 7–24 | 30–36 | MPa |
| elongation | 200–600 | 70–200 | % |
| hardness_shore_a | 40–90 | — | Shore A |
Compatibility Assessment
NBR (Nitrile Rubber) and PP-H (Polypropylene Homopolymer) 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-H (Polypropylene Homopolymer)?
NBR (Nitrile Rubber) and PP-H (Polypropylene Homopolymer) have a 0% composition overlap. They are generally not directly interchangeable.
Can I replace NBR (Nitrile Rubber) with PP-H (Polypropylene Homopolymer)?
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-H (Polypropylene Homopolymer)?
The main differences are in the following elements: overall alloying content. NBR (Nitrile Rubber) is a Polymers grade, while PP-H (Polypropylene Homopolymer) is a Polymers grade.
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Data provided for reference only. Always verify against the applicable specification for critical applications.
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