Diameter Range
10mm - 500mm
Hardness
30-80 Shore A
Thickness
0.3mm - 6mm
Temperature
-50°C to +200°C
Rubber Diaphragm Manufacturer - Custom Molded Diaphragms for Pumps, Valves & Actuators
Rubber diaphragms are flexible elastomeric membranes engineered to flex, seal, and regulate the flow of fluids and gases in pumps, valves, actuators, pressure regulators, and brake systems. They function by deflecting under pressure differential while maintaining a sealed barrier between two chambers. Available as flat diaphragms, convoluted diaphragms, rolling diaphragms, and fabric-reinforced diaphragms, they are manufactured by compression molding with or without embedded fabric layers and metal inserts for structural support.
Available Diaphragm Materials
We manufacture rubber diaphragms in all of the above materials including fabric-reinforced versions with nylon or polyester inserts for enhanced pressure resistance and flex life.
About ARPL Rubber Diaphragms
ARPL is one of India's leading manufacturers of custom rubber diaphragms, serving OEMs and industrial clients across automotive, pump, valve, medical device, and process control industries. As a trusted rubber diaphragm manufacturer in India, we produce flat, convoluted, rolling, and piston-type diaphragms in NBR, EPDM, Silicone, Neoprene, Viton, and fabric-reinforced compounds for critical flow control and pressure regulation applications.
Our manufacturing capabilities include compression molded diaphragms from 10mm to 500mm diameter, with thicknesses from 0.3mm to 6mm and hardness from 30 to 80 Shore A. We produce both homogeneous rubber diaphragms and fabric-reinforced versions with nylon or polyester inserts for enhanced burst pressure and flex life. Metal studs, plates, and inserts can be molded in-place for direct mounting. Our engineers support customers from concept through prototype to high-volume production with full PPAP documentation.
Why Choose ARPL Rubber Diaphragms?
With over 30 years of experience in rubber manufacturing, ARPL has the tooling expertise, compound knowledge, and quality systems to produce diaphragms for the most demanding applications. Our IATF 16949:2016 and ISO 9001:2015 certified facility ensures every diaphragm meets strict dimensional and performance requirements. We specialize in complex profiles — convoluted diaphragms for maximum stroke, rolling diaphragms for zero-friction actuation, and multi-layer fabric-reinforced designs for high-cycle pump applications.
We support rapid prototyping for new product development and high-volume mass production for established applications. Whether you need a small batch of prototype diaphragms for a new valve design or millions of brake diaphragms for automotive OEMs, ARPL delivers consistent quality with competitive pricing. Our in-house tool room enables fast tooling turnaround for custom diaphragm profiles.
Diaphragm Material Guide
Selecting the right rubber diaphragm material is crucial for optimal performance and longevity. Below is our comprehensive guide to help you choose the most suitable material for your application:
| Material | Temperature Range | Key Properties | Typical Applications |
|---|---|---|---|
| NBR (Nitrile) | -40°C to +120°C | Excellent oil resistance, good mechanical properties, cost-effective | Hydraulic systems, fuel systems, automotive applications |
| FKM (Viton®) | -20°C to +200°C | Superior chemical resistance, high temperature stability | Chemical processing, aerospace, high-temperature applications |
| EPDM | -50°C to +150°C | Excellent weather resistance, good for water and steam | Water systems, brake fluids, outdoor applications |
| Silicone | -60°C to +200°C | Wide temperature range, FDA compliant, good flexibility | Food & beverage, medical devices, extreme temperatures |
| HNBR | -30°C to +150°C | Enhanced heat and chemical resistance, good mechanical properties | Automotive A/C, power steering, oil field equipment |
| Natural Rubber | -50°C to +70°C | Excellent elasticity, good abrasion resistance | Low temperature applications, general purpose sealing |
Note: The above temperature ranges and properties are general guidelines. Actual performance may vary based on specific compound formulations and application conditions. Contact our technical team for detailed material recommendations based on your specific requirements.
Rubber Diaphragm Applications & Industries
Rubber diaphragms are critical flow control and pressure regulation components used in pumps, valves, actuators, regulators, and brake systems across automotive, industrial, medical, and process control industries. As a leading rubber diaphragm manufacturer in India, ARPL produces flat, convoluted, rolling, and fabric-reinforced diaphragms engineered for precise actuation, long flex life, and reliable sealing under demanding operating conditions.
Pumps, Valves & Actuators
Rubber diaphragms are the core functional element in diaphragm pumps (air-operated double diaphragm, metering, and dosing pumps), control valves, solenoid valves, pressure regulators, and pneumatic actuators. ARPL manufactures pump diaphragms with fabric reinforcement for millions of flex cycles, valve diaphragms with precise actuation profiles, and actuator diaphragms for reliable on/off and modulating control in process automation systems.
Automotive & Brake Systems
Rubber diaphragms are critical components in automotive brake boosters, EGR valves, fuel pressure regulators, carburetor accelerator pumps, and emission control systems. ARPL supplies diaphragms to automotive OEMs and Tier-1 manufacturers with materials selected for fuel resistance (NBR/FKM), high temperature stability, and long service life under continuous cycling in engine bay environments.
Medical, Gas & Pressure Regulation
Rubber diaphragms are used in medical devices (ventilators, infusion pumps, blood pressure monitors), gas regulators (LPG, CNG, industrial gas), pressure switches, and flow meters. ARPL manufactures diaphragms in medical-grade silicone and FDA-compliant compounds for sensitive applications, and chemical-resistant Viton and EPDM for aggressive industrial gas and chemical environments.
Related ARPL Products
Explore our complete range of rubber products including O-Rings, Rubber Gaskets, Rubber Washers, Rubber Bellows, and Rubber Caps. For flow control assemblies with rubber-to-metal bonded elements, visit our Rubber-to-Metal Bonded products page.
Why Choose ARPL for Rubber Diaphragms?
- Over 30 years of experience as a rubber diaphragm manufacturer in India
- High-volume capacity (50,000+ units/day) for OEM and Tier-1 automotive customers
- Precision compression molding with fabric reinforcement and insert molding capabilities
- Wide material range: NBR, EPDM, Silicone, Neoprene (CR), FKM (Viton®), Fabric-Reinforced
- Compliance with ISO 9001:2015, IATF 16949:2016 for automotive and industrial quality standards
- Custom diaphragm tooling, fabric reinforcement, and metal insert molding
- Export-ready with ISO 9001:2015, IATF 16949:2016 certification and global shipping
Global Export Markets
ARPL supplies rubber diaphragms from India to global OEMs and Tier-1 suppliers in major industrial and automotive markets including the USA, Germany, Mexico, Turkey, Italy, the United Kingdom, the UAE, and Brazil. Our international logistics capabilities ensure timely delivery with proper documentation for seamless customs clearance. All export shipments comply with destination country regulations, REACH, and RoHS requirements.
Request a Quote
Get a custom quote for your rubber diaphragm requirements
Related Products
Frequently Asked Questions
Find answers to common questions about rubber diaphragms
Rubber diaphragms are flexible elastomeric membranes that deflect under pressure differential to control, separate, or regulate the flow of fluids and gases. They maintain a sealed barrier between two chambers while allowing movement. Used as the functional element in diaphragm pumps, control valves, pressure regulators, actuators, and brake boosters.
ARPL manufactures flat diaphragms, convoluted (bellows-type) diaphragms, rolling diaphragms, and piston/cup-type diaphragms. We also produce fabric-reinforced diaphragms with nylon or polyester inserts for enhanced burst pressure and flex life, and diaphragms with molded-in metal studs, plates, or inserts for direct mounting.
Fabric-reinforced diaphragms have nylon or polyester fabric embedded between rubber layers. This provides significantly higher burst pressure ratings, improved dimensional stability under cycling, better resistance to creep and permanent deformation, and dramatically longer flex life — often millions of cycles. They are essential for diaphragm pumps, high-pressure regulators, and safety-critical automotive applications.
ARPL offers diaphragms in NBR (Nitrile) for oil and fuel resistance, EPDM for water and steam applications, Silicone for extreme temperature ranges, Neoprene for general-purpose and weather resistance, Viton (FKM) for aggressive chemicals and high temperatures, and Natural Rubber for high elasticity and tear strength. Food-grade and FDA-compliant compounds are available for food and medical applications.
Yes, ARPL manufactures diaphragms with molded-in metal components including studs, threaded inserts, backing plates, and piston assemblies. These are produced using insert molding techniques where the metal is placed in the mold and rubber is vulcanized around it, creating a permanent rubber-to-metal bond for reliable mounting and actuation.
ARPL manufactures rubber diaphragms from 10mm to 500mm diameter, with thicknesses from 0.3mm to 6mm. Hardness ranges from 30 to 80 Shore A depending on material and application. Custom profiles, convolutions, and mounting configurations are available with full tooling support from our in-house tool room.