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 |
| PTFE | 100 | -100 - 280 | White | Good chemical stability | Fair | About 20 |
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.
FKM/ FPM Rubber Features:
*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:
- Good hydraulic oil and gasoline resistance
- Resistant to pure aliphatic hydrocarbons (propane, butane, fuel)
- Resistance to mineral and silicone oils and greases
- Resistant to water, oxygen, ozone and aging
- Excellent tear and abrasion resistance
- Available in multiple types and compounds to meet performance and
cost requirements
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
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.
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 against copy of B/L or
L/C at sight, Paypal is also
