Factory OEM High Strength Resistance N7001NQ NBR O Ring for Gas Application
Introduction for O Rings
1.The O-ring is an annular seal having an O-shaped cross section, the size of which is determined
by the inner diameter ID and the wire diameter CS.
2.O-ring size calculation: outer diameter = inner diameter + 2 x wire diameter (OD = ID + 2x CS).
3.The purpose of using O-ring seals is to prevent leakage and loss of liquids or gases.
4.O-rings are the most commonly used type of seal because of their simplicity, convenience, and
small installation space. As long as the groove design and material selection are correct, and the
operating conditions are within the temperature range of the rubber material, the seal can have a
long-term sealing effect in the static or dynamic seal.
Material description for NBR Rubber O-Rings
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.
Following elastomers can be use in O ring :
* Aflas® or Kalrez®(FFKM)
* Acrylate Rubber(ACM)
* Butyl Rubber(IIR)
* Ethylene-propylene (EPR, EPDM)
* Ethylene Acrylate Rubber(AEM)
* Fluorocarbon (FKM/FPM/FKM)
* Fluorosilicone(FVMQ)
* Hydrogenated Nitrile (HNBR)
* Neoprene Rubber(CR)
* Nitrile Rubber (Buna-N/NBR)
* Natural Rubber(NR)
* Polyurethane(PU)
* Silicone Rubber
* Styrene-butadiene Rubber (SBR)
| 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 |
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
Certificates
1, IATF16949
2.ISO9001
3.ISO14000
Progress
Cooperative partner
Ruichen company have cooperated with many superior customers as below , we have complete system and excellent productivity
to serve for you
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 accepted.
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