NBR
NBR Materials for Industrial Rubber Parts
Review NBR candidates for a defined industrial application. Fluid composition, temperature and the required balance of flexibility and mechanical properties guide compound selection.
01 / NBR
Begin with the NBR compound and purchasing task
State whether you need a finished seal, another molded part or an uncured compound for your process. Provide the existing grade, compound code or required properties, including available acrylonitrile-content information. Keep the material identity with the drawing and quantity rather than treating all nitrile compounds as interchangeable.
02 / NBR
Compare oil exposure with the cold requirement
Identify the complete oil, fuel, lubricant or working liquid and the real temperature sequence. If the part contacts wastewater or a cleaning mixture, describe constituents, concentration, contaminants and contact duration.
| Input | What to define |
|---|---|
| Material | Existing grade or compound, specification revision and required properties |
| Fluid | Exact product or composition, additives, cleaning and changes in service |
| Cold duty | Startup temperature, movement, standing time and recovery |
| Other exposure | Normal temperature, peaks, duration, pressure and interruptions |
| Part | Drawing, dimensions, groove or mating surfaces and installation |
| Supply | Part or compound form, sample and production quantity, packaging |
| Acceptance | Specimen conditions, dimensional criteria and assembly function |
03 / NBR
Define a useful wear or friction comparison
If comparing NBR, HNBR or an XNBR reference, identify the actual compounds and use the same motion, counterface, lubrication, particles, temperature and load. Define whether the endpoint is wear, starting force, running friction or loss of sealing function. A material-family comparison is separate from confirming a particular supply option.
- Use identified specimens or representative finished parts.
- Record preparation, exposure and measurement conditions.
- Evaluate the required interface with an agreed functional criterion.
04 / NBR
Keep material reports and finished-part acceptance connected
Ask for the properties needed by the part specification and the method used to obtain them. Link results to compound and specimen identification. For the finished component, agree dimensions, surface condition, conditioning and assembly checks. A fluid-swell value alone does not demonstrate every mechanical or sealing requirement.
05 / NBR
Prepare samples and the repeat-supply decision
Send drawing revision, material reference, quantity and the concern the samples must resolve. Agree the test scope, approval responsibility, lot records and packaging before recurring supply. For compound purchases, confirm the receiving process and material-specific handling instructions; for molded parts, retain the approved geometry and inspection requirements.
From your requirements to a component review
Review an NBR Application
Send your drawing or describe the application. Include service conditions, material requirements and quantity.