Custom Molded EPDM NBR Rubber Diaphragm

- Mar 16, 2017-

Basic Information

  • Material: EPDM

  • Hardness: 50-80 Shore A, or per your request

  • Production Method: Compression Mold

  • Certificate: ISO, SGS, Reach, Ts16949, UL94

  • Specification: According to the drawings

  • Usage: Agricultural, Industrial, Medical, Vehicle, Electronic, Household

  • Brand: DOIT

  • Size: Customized

  • OEM/ODM: Acceptable

  • Package: Inner Plastic Bag/Outside Carton

  • Place of Origin: Dongguan, Guangdong, China

Product Description

Molded rubber diaphragm NR/EPDM/SBR/NBR/CR, manufacture NBR/CR/NR/CSM/VITON/EPDM rubber diaphragm

With advanced mold center, we can custom diaphragms of various sizes, in different shapes in Natural, Neoprene, EPDM, Silicone and Viton rubber.

1) Available material: Material for NBR, FKM, FPM, VITON(FKM)&Dow elastomers, Neoprene, HNBR, Natural rubber, SBR, IR, IIR(butyl rubber), ACM ect. KTW approved for material EPDM.

2) All manufacturing processes confirm to the ISO/TS16949, SGS, RoHS, REACH

3) Customer's design and specifications are accepted.

4) Color and shape can be changed upon request. Available in various sizes and colors.

5) Our professional R&D team can provide you higher quality products with competitive price and all documents such as PPAP, CONTROL PLAN, PFMEA etc.

6) Have advanced precision grinder, Taiwan and Japan Mirror surface EDM, CNC machine and etc, we produce mold by ourself.

7) Responds very well with resistance to ozone, high temperatures, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics and many organic solvents and chemicals. The universal O-ring.

8) Widely used in automobile, electrical appliances and other industry. Good function of sealing and attenuating shock

9) EPDM70 Black (E7001Z59) can meet WRAS KTW DVGW(W270), and have all the certificates.

A diaphragm seal is a flexible membrane that seals and isolates an enclosure. The flexible nature of this seal allows pressure effects to cross the barrier but not the material being contained. Diaphragms are also used to protect a process fluid from the pressure sensor.

Advantages of Our Product

A). Raw material is imported from the famous companies from Europe, US and Japan, like DuPont, Bayer.
B). Environmental protection.
C). The non-standard model can be customized.
D). Mature technology, stable quality.
G). Model is complete, enough stock in ventory.
H). Excellent resistance to climate performance.
I ).  Excellent elastic deformation.
J).  Meet the demand of sustainable development.
K). Use ERP system to insure the best services for our customers.
L).  We have mold making shop to meet your requirements on the customized parts

The reinforced membrane transfers energy and separates two medium.
Works under two different pressures / liquids / gases.
Reinforced with fabric.
Transfers pressure from one side to another.

Selection Parameters:
Contact Medium
Working Atmosphere
Frequency of Deflection
Engineering Design

Rubber Diaphragms are resistant to a variety of medium at different pressure. It's function is to fulfill switch, control, valve, pump and accumulator functions. Diaphragms are a sealing & moveable dividing membranes between two components. 

We have reliable manufacturing facilities for rubber diaphragms. We can produce this high quality product as per our client's requirement. These products are available at most economical prices.


Material Used:
Rubber: Natural, Nitrile, Silicone, EPDM, SBR and Neoprene,Fibre
Designed to face the heavy load, high temperature and high speed of vehicles.
Designed to meet international quality standards.
Can be made as per client's requirements.
Process Involved: Compression molding process, injection molding process and transfer molding process.

1. Application: Metering pump, chemical pump, diaphragm pump
2. The material have FDA certification.
3: The diaphragm is worked with 286-015-600.

Positive Seal
No Lubrication
No Breakaway Force
No Friction
High Strength
Tear Resistant
Functionality Over Wide Pressure Ranges
Simple Design


Item nameRubber diaphragm
MaterialRubber,Silicone,NBR,EPDM,FKM,NR,PU,Viton etc
SizeCustomized /standard /nonstandard
such as: GB3452.1-82 ,AS568A ,JIS B2401
HardnessShore A 30-90
ColorBlack, White, Clear, or per your request.
ToleranceAccording to your request or ISO standard.
TemperatureCommon: -20~300degrees;
Special features /
working environment
Non-toxic; oil-resistant; heat resistant; abrasion-resistant; aging resistant; insulation; acid and alkaline
resistant; airtight; shock absorption, etc.
CertificateISO9001:2008, ROHS, REACH and etc
PortShenzhen , China
Delivery Time15 days after confirmation of the sample or according to customers' order quantity
Payment TermT/T
Packaging DetailsAccording to your request
Supply Ability10,000,000 Pieces per week
Customer groups/
Application fields
Automotive, Transportation, Filling Machinery, Food Machinery, Oil exploitation, Sanitary plumbing,
Medical Machinery, Textile machinery, Mining machinery, Exercise equipment etc.
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