Nitrile Rubber Diaphragm Pump Membrane — Geometry and Flexing Duty
Product Overview
This nitrile rubber membrane is specified as a replacement flexible diaphragm for an identified pump. Confirm NBR compound, attachment geometry and flexing duty against the original part drawing. Reinforcement or a multilayer construction must be stated on the approved specification.
Technical Specifications & Key Features
Material Composition
Base Material Options:
• NBR (nitrile rubber) for this enquiry; exact grade to fluid and duty specification
• FKM or EPDM alternatives require a separate compound and compatibility review
• Special compounds require drawing, material and sample approval
Performance Characteristics
Pressure duty: confirm from the complete pump specification; this membrane has no independent universal pressure rating
Temperature duty: agree continuous and peak temperatures for the selected NBR compound and actual fluid
Chemical Compatibility:
• Compatibility depends on fluid composition, concentration and temperature
• Food-contact service requires applicable documentation for the specific compound
Physical Dimensions
Thickness: to the pump membrane drawing, including local profile and reinforcement where specified
Outside diameter and attachment dimensions: to the selected part drawing or approved sample
Custom shapes available for OEM configurations
Functional Advantages
✓ Superior Sealing Performance
Match the flexible profile to the pump stroke and pulsation duty
Inspect clamping surfaces and use the equipment-maker installation procedure
Approve material properties and compression allowance for the sealing interface
✓ Enhanced Durability
Replacement interval depends on fluid exposure, cycling and installation
Cycle-life acceptance requires a defined test method and part-specific results
Edge profile and any reinforcement follow the approved drawing
Application Environments
Industrial Pump Systems
Chemical processing pumps
Pharmaceutical pump enquiries require material, cleanliness and equipment approval
Food and beverage enquiries require compound-specific food-contact documentation
Specialty Applications
High-purity transfer enquiries require an agreed cleanliness specification
Chemical service requires compatibility review of the selected compound
Hygienic service requires equipment-specific approval
Operating Conditions
▶ Define wet/dry cycling and confirm permitted operation with the pump maker
▶ Provide cleaning agent, concentration, temperature and exposure time
▶ CIP or SIP suitability requires specific compound and process approval
Quality Certifications
• Manufacturing under an ISO 9001 quality management system
• Food-contact conformity is confirmed only with applicable grade-specific documentation
• Material declarations are agreed for the selected compound and order
For a nitrile membrane replacement, send the pump model, old part number, drawing or sample, fluid details and duty conditions. Agree geometry and compound before sample approval; a visually similar diaphragm does not establish interchangeability.
Nitrile Membrane Replacement: Check Geometry Before Cycling Duty
| Order detail |
Required identification |
| Original part |
Pump maker, model, part number and existing NBR grade where known. |
| Flexible profile |
Outside diameter, thickness profile, moulded contours and any fabric reinforcement. |
| Attachment |
Clamping rim, bolt pattern, central hole or insert and drawing tolerances. |
| Flexing duty |
Stroke, cycle frequency, fluid temperature and complete pump pressure. |
| Sample approval |
Confirm fit, compound and agreed inspection criteria before repeat production. |
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