Place of Origin:
Jiangxi, China
Brand Name:
ORK
Certification:
REACH / ROHS / ISO9001 / IATF / SGS / FDA
Model Number:
AS568 & PG Standard O-Rings
Video
Video
Welcome to: O-ring
O-ring application range:
O-rings are suitable for mounting on a wide range of mechanical equipment and function in
a static or moving state at specified temperatures, pressures, and in different liquid and
gaseous media. In the machine tools, ships, automobiles, aerospace equipment, metallurgical
machinery, chemical machinery, engineering machinery, construction machinery, mining
machinery, petroleum machinery, plastic machinery, agricultural machinery, and various types
of instruments, a large number of types of seals are applied. element. O-rings are mainly
used for static and reciprocating seals. For rotary motion seals, only for low speed rotary seals.
O-rings are generally mounted in a groove with a rectangular cross section on the outer or inner
circle to seal. O-ring seals still have good sealing and shock absorption in oil, acid, alkali,
grinding and chemical corrosion. Therefore, O-rings are the most widely used seals in hydraulic
and pneumatic transmission systems.
O-ring advantage:
O-rings have the following advantages compared to other types of seals:
-- Suitable for a variety of sealing forms: static seal, dynamic seal
Suitable for a variety of materials, sizes and grooves have been standardized, interchangeable
- Suitable for a variety of sports: rotary motion, axial reciprocating motion or combined
motion (such as rotary reciprocating combined motion)
- Suitable for many different sealing media: oil, water, gas, chemical media or other mixed media
Effective sealing of oil, water, air, gas and various chemical media through the selection of
suitable rubber materials and appropriate formulation design. The temperature range is
wide (-60 ° C ~ +220 ° C), the pressure can be up to 1500Kg / cm2 when used in fixed use
(combined with the reinforcing ring).
--Simple design, compact structure, easy to assemble and disassemble
The O-ring cross-section structure is extremely simple, and has a self-sealing effect, and the
sealing performance is reliable.
Since the O-ring itself and the mounting structure are extremely simple and standardized,
installation and replacement are very easy.
--More varieties of materials
Can be selected according to different fluids: nitrile rubber (NBR), fluororubber (FKM),
silicone rubber (VMQ), ethylene propylene rubber (EPDM), neoprene (CR), butyl rubber (BU),
natural rubber (NR), etc.
--low cost
--The dynamic friction resistance is relatively small
We can supply material as NBR, FKM, SIL, EPDM, CR, NR, PU, HNBR, FFKM, ACM ,SBR , FLS , etc...
Different elastomers have different compatibility with various chemical elements and their characteristics. See
the table below for more material knowledge to order the most cost-effective o-rings from us.
| Material | Hardness (Shore A) |
Temperature (ºC) |
Main Color | Advantage | Price Level | Shelf Life (Years) |
| NBR / Nitrile / Buna-N | 60-90 | -40 - 120 | Black | Good oil resistance & low price | Low | 5-10 |
| HNBR / HSN | 60-90 | -40 - 150 | Green | Suitable for the cooling industry | High | 5-10 |
| FKM / FPM / Viton | 70-90 | -20 - 200 | Brown | High-temperature & chemical resistance | High | About 20 |
| EPDM / EPR | 50-90 | -50 - 150 | Black | Excellent weather & ageing resistance | Fair | 5-10 |
| VMQ / Silicone | 40-80 | -70 - 220 | Red | High-temperature & FDA food grade | High | About 20 |
| Neoprene / CR | 50-90 | -40 - 120 | Black | Versatility Properties | Fair | 5-10 |
| FFKM | 70-90 | -10 - 320 | Black | Excellent chemical & high-temperature | Highest | About 20 |
| FVMQ / Fluorosilicone | 40-80 | -60 - 200 | Blue | Wider operating temperature range | High | About 20 |
| Aflas / FEPM | 40-90 | -2 - 230 | Black | Good chemical compatibility | Higher | About 20 |
| PU / polyurethane | 60-90 | -40 - 90 | Natural | High strength and wear resistance | High | About 10 |
What's Each Rubber's Typical Features ?
NBR Rubber Features:
Nitrile rubber (NBR, Buna-N) provides excellent resistance to petroleum oils as well as mineral and vegetable oil.
Nitrile rubber also offers strong resistance to heat aging - often a key advantage over natural rubber.
Nitrile rubber performs well in carburetor and fuel pump diaphragms, aircraft hoses, seals and gaskets as well as
oil-lined tubing. Due to its versatility, nitrile is used in applications involving not only oil and fuel resistance, but
those applications requiring resistance to heat, abrasion, water, and gas permeability.
*Service Temperature
For general type FKM the service temperature is better limited to approximately from -26 C to 232 C in static
applications, though the service temperature can arrive to 275 C at short time In dynamic applications, it is
suitable between -15 C and 200 C.
*Application
Because FKM has excellent resistance of high temperature, oil, solvent, flame, chemicals and weathering, it is
usually applied in automotive, chemical processing, aerospace and many other industries.
EPDM Rubber Features:
EPDM rubber is a high density rubber primarily used for outdoor applications. It has dynamic and mechanical
properties between natural rubber and synthetic rubber.
Do not use EPDM if continual contact with petroleum based products is required.
Not recommended for usage in food applications or those that are exposed to aromatic hydrocarbons.
HNBR Rubber Features:
Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as Highly SaturatedNitrile (HSN), is special class
of nitrile rubber (NBR) that has been hydrogenated to increase saturation of the butadiene segment of the
carbon polymer backbone. Subsequent improvements to the material properties, over that of a nitrile rubber
(NBR), include greater thermal stability, broader chemical resistance, and greater tensile strength.
HNBR is classified by ASTM as a DH-type polymer. This classification indicates 150ºC service temperature as
well as less than 30% swell in IRM 903 oil. HNBR can be formulated to meet application temperatures ranging
between -50°C and 165ºC.
SBR Rubber Features:
1.Main materials: Styrene-butadiene rubber (SBR), a general-purpose synthetic rubber,produced from a copolymer
of styrene and butadiene. Exceeding all other synthetic rubbers in consumption, SBR is used in great quantities in
automobile and truck tires, generally as an abrasion-resistant replacement for natural rubber (produced from
polyisoprene).
2.Available place: They are widely used in automobile, electrical appliances, building vibration isolation and other
industry.For example, air blower, water pump, instrument, measuring of ships and so on.
3.Main performance: SBR has similar chemical and physical properties to natural rubber, with generally better
abrasion resistance,outstanding strength,good creep and stress relaxation resistance and low cost,etc. It is not
recommended to use SBR in applications that involve ozone, strong acids, oils, greases, fats and most hydrocarbons.
Neoprene Rubber Features:
Neoprene Rubber, also known as neoprene polychloroprene, is an extremely versatile synthetic rubber with more
than 75 years of proven performance.
In the automotive world, neoprene is used for many under-the-hood and underbody parts that require a reasonably
priced,mid-performance polymer with a good all-around balance of performance properties.
Natural Rubber Features:
Natural rubber was originally derived from latex found in the sap of rubber trees. The purified form of natural
rubber can also be produced synthetically. Natural rubber is an ideal polymer for dynamic or static engineering
applications.
Caution: Natural rubber is not recommended for applications where the rubber part will be exposed to ozone,
oils, or solvents.
PU/Polyurethane Rubber Features:
Polyurethane is an organic polymer. Polyurethanes are formed by reacting a polyol (an alcohol with more than
two reactive hydroxyl groups per molecule) with a diisocyanate or a polymeric isocyanate in the presence of
suitable catalysts and additives.
Polyurethane is a widely used compound due to its superior strength, tear and abrasion resistance. Polyurethane
also provides excellent permeation resistance.
Features:
For color , we can make as customers' requirements .Below table is the colorful o rings
we made.If you need colored o rings , you can give me pantone number .
Except Rubber Gasket for Electronic Home Appliances & electric seals , we can also produce rubber seals for
Automotive seals Oil & Gas seals , Coal Mining Machinery seal , Electronic Home Appliances & electric seals ,
Chemical equipment seals , Artificial intelligence & New Energy seal , Refrigeration seals , Aerospace seals ,
Hydraulic & Pneumatic seal , Food-grade seals ,Valve & pipe seals , Pump seals ...etc.
Our Factory
Rui Chen Sealing Co., Ltd was built in 2006, now there are more than 200 staff. The company has
two branches in Guangdong
and Jiangxi, They are Dongguan Rui Chen Sealing Co., Ltd. and Shangrao Rui Chen Sealing Co., Ltd..
In recent years, the company has been supported by ShangRao municipal government and fully enjoy
all the preferential policies
for economic development zone. We will always take "best quality, best service" as our mission, and make
progress together with you, harmony and mutual win!
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
Progress
Cooperative partner
Ruichen company have cooperated with many superior customers as below , we have complete system and excellent productivity
to serve for you
Our service
International exhibition
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.
Send your inquiry directly to us
