Steam & Hot Water Resistant EPDM Rubber Balls Ethylene Propylene Spheres for HVAC, Boiler Systems & Sanitary Valves

Product Description

 

Product Description

Product Description

Rubber balls are precision-molded spherical sealing components widely used in check valves, pumps, meters, medical devices, fluid dispensing systems, and screening equipment. They function as reliable sealing elements and flow control devices, providing secure shut-off and consistent performance across a broad range of industrial applications.

Manufactured from a wide selection of high-performance elastomers, our rubber balls are engineered to meet the demanding requirements of sealing, flow control, and fluid handling systems with exceptional durability, elasticity, and resistance to abrasion, chemicals, and temperature extremes.

Key Features & Advantages

• Premium Material Selection: Available in NBR / EPDM / FKM (FPM) / Silicone / Polyurethane / Natural Rubber / Neoprene to meet specific application requirements

• Precision Manufacturing: Tight dimensional tolerances and high sphericity ensure reliable sealing and consistent performance in check valves and pumps

• Wide Hardness Range: 30 - 95 Shore A (customizable per application)

• Broad Temperature Range: Engineered to operate from -60°C to +204°C depending on material selection

• Excellent Chemical Resistance: Compatible with oils, fuels, acids, alkalis, solvents, steam, and aggressive chemicals (material dependent)

• Outstanding Durability: Excellent resistance to abrasion, wear, aging, ozone, and weathering for extended service life

• Superior Sealing Performance: Low compression set and high resilience maintain sealing force over time

• Customizable: Available in various diameters, colors, hardness levels, and custom formulations per customer specifications

• Smooth Surface Finish: Minimizes friction and ensures leak-free operation in sealing applications

• Precision Ground Option: High sphericity ground balls available for the most demanding applications
 

Technical Specifications
Parameter	Specification
Diameter Range	3mm - 100mm+ / 1/8″ - 4″
Hardness Range	30 - 95 Shore A (customizable)
Tensile Strength	7.5 - 20 MPa (material dependent)
Elongation at Break	100% - 600% (material dependent)
Sphericity	±0.010″ (±0.25mm) / Precision Ground: ±0.002″ (±0.05mm)
Surface Finish	Smooth / Precision Ground
Color	Black / White / Red / Yellow / Clear / Custom Colors
Standards	AS568 / ISO 3601 / DIN / JIS / Custom per Drawing
Certifications	RoHS / REACH / FDA (select grades) / USP Class VI (select grades) /  UL 94 V-0

 

Material Selection Guide
Material	Hardness Range	Temperature Range	Key Properties	Typical Applications
NBR (Nitrile)	50-90 Shore A	-34°C to +121°C	Excellent oil, fuel, grease & solvent resistance	Automotive, hydraulic systems, oil & gas equipment
EPDM	50-90 Shore A	-50°C to +150°C	Excellent ozone, weather, steam, acid & alkali resistance	Outdoor equipment, HVAC, water treatment, solar systems
FKM	65-95 Shore A	-23°C to +204°C	Excellent high temperature & chemical resistance	Aerospace, chemical pumps, pharmaceutical, refinery
Silicone (VMQ)	30-80 Shore A	-60°C to +200°C	Excellent low/high temperature, food grade, biocompatible	Medical devices, food processing, sensors
Polyurethane (PU)	80-95 Shore A	-29°C to +82°C	Exceptional abrasion, tear & tensile strength	Marine, aviation, heavy machinery, screen deblinding
Natural Rubber (NR)	45-90 Shore A	-57°C to +135°C	High elasticity, resilience, impact & abrasion resistance	Check valves, bearings, shock absorption
Neoprene (CR)	50-90 Shore A	-40°C to +100°C	Good water, weather & UV resistance	Marine, outdoor equipment, wet environments

 

Typical Applications by Industry
Industry	Applications
Oil & Gas / Petrochemical	Check valve balls, pump seals, wellhead equipment
Automotive	Check valves, fuel systems, hydraulic pumps, engine components
Pharmaceutical & Medical	Metering pumps, medical devices, flow control systems
Food & Beverage	Sanitary pumps, filling machines, beverage dispensers
Chemical Processing	Chemical pumps, metering valves, reactor seals
Water & Wastewater Treatment	Check valves, pumps, filtration systems
HVAC & Refrigeration	Compressor valves, expansion valves, cooling systems
Screening & Deblinding	Screen deblinding balls, vibrating screens, mining equipment
Aerospace	Fuel system components, hydraulic seals

Please find below our standard rubber ball size chart. Additionally, we are fully equipped to open new tooling and manufacture custom sizes per your specifications
 

Mold No.	Size/mm
GSA0274	1	1	1
ORK000A001	6.35	6.35	6.35
ORK000A002	9.52	9.52	9.52
ORK000A002	9.52	9.52	9.52
ORK000A004	12.7	12.7	12.7
ORK000A005	4.75	4.75	4.75
ORK000A006	15.88	15.88	15.88
ORK000A007	2.36	2.36	2.36
ORK000A008	3.18	3.18	3.18
ORK000A009	8	8	8
ORK000A010	19.1	19.1	19.1
ORK000A011	4	4	4
ORK000A015	8.5	8.5	8.5
ORK000A016	1.6	1.6	1.6
ORK000A017	14.3	14.3	14.3
ORK000A020	48.5	48.5	48.5
ORK000A021	34.5	34.5	34.5
ORK000A022	61	61	61
ORK000A023	4.62	4.62	4.62
ORK000A025	7.92	7.92	7.92
ORK000A026	7	7	7
ORK124A009	10.5	10.5	10.5
ORK314A001	11	11	11
ORK314A002	15	15	15
ORK314A003	20	20	20
ORK314A003	20	20	20
ORK314A004	25	25	25

Certifications

We have certificates :ISO 9001:2015 , ISO 14001:2015 ,ISO 45001:2018 , IATF 16949 , FDA, REACH, ROHS, SGS etc.

 

Company Profile

1. Since 2006, focus on rubber seals, especially for auto parts

2. Certificates: ISO9001, IATF16949, ISO14001, ISO45001,ISO 13485

3. Two factories, more than 18000M2,clean room 600M2, with 300 workers.

 

4. Molds > 10000 sets, especially o rings, about 5000 sets.

 

5.O-ring series covers American standard (AS568), Japanese standard (JIS), national

standard(GB), and produces a large number of customized non-standard parts.

 

6. Material: NBR, FKM, SIL, EPDM, CR, NR, PU, HNBR, FFKM, SBR .The rubber materials

used meet the requirements of ROHS2.0 and REACH235.

 

7. Material Certificates: FDA, ROHS, REACH, UL157, CP65 WRC, EN549,EN45545.

 

8. Products are widely used in automotive parts, electronic connectors, valves, pneumatics,
power tools, new energy, medical equipment, electronic products and other fields.

 

9. company has introduced HRP, ERP and other systems since its inception.

 

10. The company's labor cost, raw material procurement, production process and

product quality were comprehensively and scientifically controlled.

 

Quality Control

Ruichen always meets our customers' requirements. To make sure we produce high-quality o-rings, our company implements the

following general standards:

1) Raw material incoming inspection standard ASTM D2000 & HG/T 2579-2008 & HG/T 2811-1996
2) Public o-ring dimensional tolerance GB/T 3452.1-2005
3) N-level specification for o-ring appearance quality inspection GB/T 3452.2-2007
4) Hardness measurement model Micro O-Ring Testing (Type M system)
5) Hardness using standard ASTM D2240 Rubber Standard Test Method (Shore A)
6) Sampling inspection specification GB/T2828.1-20

Cooperative Partner

Ruichen company have cooperated with many superior customers as below , we have complete system and excellent productivity

to serve for you

Our Advantages

Why RUICHEN?

Many big companies select RUICHEN for their rubber seals and customized rubber parts because we always

satisfy them in quality, price, delivery, service, etc. At the same time, we also attach great importance to the

small customers in niche markets.Whether your purchase quantity is big or small, you are our valuable partners.

High Quality
We continue to manufacture high-quality products for all customers and pursue 100% customer satisfaction,

which has become one of our core competencies.

Profession
We have rich experience in materials, products, and production and excellent international trade and language

communication skills.

Best Services
From quoting, sampling, production, and shipping to after-sales, our sales will provide you with the best service

so that you can rest assured completely.

10000+ Projects Delivered
Over 10K projects have been sent to our customers worldwide in recent years, and we have received countless

positive comments.

Low Price
Our customers can obtain maximum profits through the ISO management system and intelligent manufacturing

to reduce our costs continuously.

Massive Capacity
Our in-house facilities allow us to get your projects done fast. And thanks to our strong relationship with rapid

materials partners, our capacity is not limited.

Fast Delivery
Unlimited capacity, experienced engineers, and a flexible production system allow us to create your seals and

production parts in a short period.

1000+ Happy Customers
We aim to keep every customer happy with reliable quality, fast turnaround, and excellent services. We want all

our new customers to become long-term customers.

ORK Other Rubber seals

We can also produce Automotive Rubber Seals ,Connector Rubber Seals ,Power Tool Rubber seals ,Valve Rubber Seals ,Pipe Rubber Seals ,Semiconductor Rubber Seals ,Hydraulic Pneumatic Rubber Seals ,Pump Rubber Seals ,Oil and Gas Seals ,Food Grade Rubber Seals ,Medical Rubber Seals ,Chemical Equipment Rubber Seals ...etc.

FAQ

Q: 1 What kinds of materials can you provide?
A: NBR, EPDM, SILICONE,FKM(FKM),NEOPRENE(CR), HNBR ,NR, IIR, SBR, ACM, AEM,Fluorosilicone(FVMQ),

FFKM etc.
Q: 2 How to select the raw compound for my application?
A: With years of experience working with a variety of material, we can help select the material that will best suit your

needs while keeping material costs in mind.
Q: 3 How long can we get the quote?
A: If your information is complete, we will provide the quotation within 8 hours.
Q: 4 Can you provide samples? Is it free or extra?
A: Yes, we can provide samples for free. Freight can be negotiated.

 

Q: 5 What is the normal lead time for product orders?
A: If the stock generally takes 3-7 days, mold about 15-18 days, no mold about 25-30 days, depending on the product

situation.

 

Q: 6 How to check the quality of the bulk order?
A: We have incoming inspection, control the quality of raw materials, process inspection,to ensure the quality of the

production process, shipping 100% of the full inspection; automatic inspection machine full inspection, and according

to customer needs before the mass production of pre-production samples.

 

Q: 7 What is your standard packing?
A: Plastic bag for inner packing .carton box for outer packing also be packed according to customer's requirements.

 

Q: 8 What's the payment term?
A: We accept T/T 30% deposit and 70% balance , Paypal is also ok.