• Ningbo WeiWo Electromechanical Tech Co.,Ltd.
    We do business with each other for long time and will continue our cooperation. Quality partner!
  • Ningbo WeiWo Electromechanical Tech Co.,Ltd.
    Alexiou Aris
    Good quality and competitive price, I'm sure we will go further and further!
  • Ningbo WeiWo Electromechanical Tech Co.,Ltd.
    Work together long time, we like friends each other, easy to get along with, very pleasant cooperation!
Contact Person : Leela
Phone Number : 86-13586885132
WhatsApp : +8613586885132

Hardness 55 Shore A Sealing Element Elastic Rubber Seal Ring RoHS

Place of Origin China
Brand Name WEIWO
Certification ISO9001:2008
Model Number 315*3.55
Minimum Order Quantity 1,000pcs
Price negotiation
Packaging Details strapping with a plastic bands, 200pcs per string
Delivery Time one week for new samples
Payment Terms T/T, Western Union, L/C
Supply Ability 100,000pcs per month
Product Details
Product Name Seal Ring Material NBR
Application Valve Color Customized
Net Weight 1.08g Molding No Need
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NBR Elastic Rubber Seal Ring


NBR Sealing Element


Hardness 55 Rubber Seal Ring

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Product Description

OEM factory customize elastic rubber seal ring with high strength



We are specialize in the sales, supporting and technical services of high quality oil seals, hydraulic & pneumatic seals, sealing materials, engineering rubber and plastic.


Products can be used in engineering machinery, injection molding machinery, hydraulic machinery, transmission machinery, sewing machinery, ceramic machinery, port machinery, metallurgical machinery, mining machinery, iron and steel machinery, forging machinery, hydraulic press, compressor, die casting machine, machine tool, Marine engineering and hydraulic pump, valve and other fields and industries.


O-ring,gasket,stopper,strip,bellow,cap,washer,valve,cord,cover,plug and lots of other rubber products can be provided by us.


Not only standard rubber products but also various rubber shaped parts can be provided by us.


Various of materials, including:SILICONE, NBR, HNBR, EPDM, FKM, FFKM, IIR, PTFE, CR and so on.


We can also: Select & develop material; Recommend sizes & Design; ODM/OEM Service; Custom Design.




Product O-RING NBR Nitrile rubber seal ring for pipe
Material NBR, Nitrile, BUNA
Hardness 40--90 Shore A
color black, brown, green,red
Working temp -15degree to 200 degree
Certificate ISO And TS16949
Application for sealing
Samples free



The working temperature is

NBR:-30°C~+120°C FKM:-20°C~+200°C

PU: -45°C~+110°C PTFE:-55°C~+260°C

Silicone:-60°C~+230°C EPDM:-50°C~+150°C



The Relations of O Ring between Hardness and Working Pressure KG/CM2(mm)
Specification Hardness 35 70 105 140 175 210 350
1.78mm 70 0.15 0.10 0.05        
80 0.20 0.15 0.10 0.05 0.03    
90 0.25 0.20 0.13 0.10 0.08 0.05 0.03
2.62mm 70 0.18 0.13 0.08        
80 0.25 0.18 0.13 0.08 0.04    
90 0.30 0.25 0.18 0.13 0.10 0.08 0.04
3.53mm 70 0.20 0.15 0.10        
80 0.30 0.20 0.15 0.10 0.05    
90 0.40 0.30 0.20 0.15 0.13 0.10 0.05
5.34mm 70 0.25 0.18 0.13        
80 0.35 0.25 0.18 0.13 0.06    
90 0.45 0.35 0.25 0.18 0.15 0.13 0.06
7.00mm 70 0.30 0.20 0.15        
80 0.40 0.30 0.20 0.15 0.07    
90 0.50 0.40 0.30 0.20 0.18 0.15 0.07




NBR Rubber o rings Gasket
Fluorocarbon seal is commonly considered to use in mechanical devices requiring maximum resistance to elevated temperatures, to many special medium, and to high vacuum applications, such as automobile, vacuum equipment and others.


Working temperature range. Considered to be -15℃ to 230℃ (5℉ to 446℉) For short working periods or still work, it may take 250℃ (482℉)

High chemical stability. Generally speaking, FKM resist strong acid and weak alkali. Additionally, it has excellent resistance in mineral oils and

has improved exceptional properties such as improve the resistance to chemical attack and expand the temperature range.


Certification: RoHS, FDA, UL94-V0, SGS

Hardness: 55-90Shore A


Manufacture process:

Hardness 55 Shore A Sealing Element Elastic Rubber Seal Ring RoHS 0


Strict Quality control:


1)Selected raw material, no smell, safe and environmental

Hardness 55 Shore A Sealing Element Elastic Rubber Seal Ring RoHS 1


2)Semi-finished o ring, fine workmanship, smooth surface

Hardness 55 Shore A Sealing Element Elastic Rubber Seal Ring RoHS 2


Competitive Advantage:

1) We specialized in producing rubber o rings,NBR o ring for many years.

2)Our silicone o rings can meet High quality Standard, and we always produce goods for Parker & NOK on OEM service. But price much better.

3)OEM/ODM Service are available.We can design and produce variours non-standard Rubber Parts according to your requirement.

4)All products are 100% inspected before delivery.


After service:

Solving problems and proposing sealing ways. Our engineers could offer design & selection support, and free sample could be provided for testing. Our aim is solving sealing problems for global customers.


To respect customers, service actively. Satisfying customers requirements as our aim. Controlling product quality & delivery time strictly. 100% qualified.


Tracking customers and replying questions positively. Answering problems patiently. If quality could not satisfy your request, return / exchange policy is available.




Applied industry:
extensively used in chemical industry, petroleum industry, medical technique, food industry, sewage-disposal industry, steel industry, semi-conduct industry and so on.

Applied equipment:
mechanical sealing, pressure vessel, gas compressor, reaction vessel, heatexchanger, boiler, filter and so on.


What kind of information do we need?
1. Material:
"Common Material Performance List" could be sent for reference.
If still not sure, suitable material could be suggested according to WORKING CONDITION,
for example: working temp. and working medium ( oil, seawater, solvent and so on)

2. SIZE:
Drawing is better, if no, welcome to send SAMPLE to us,
then we will measure it by professional equipment--Optical Projector, and make 3D drawing for you.

3. Hardness & Color:
Hardness could be suggested by your sample or working pressure, any color is welcome.

4. Qty:
Any quantity is welcome, we like to along with you about the NEW PRODUCTS from DESIGN to FINISHED.

5. Other special request:
Precision, compression set, elongation, and so on.
*Drawings, photos and samples are welcomed.
*We can produce the product according to your requirement or samples.
*welcome to visit our factory



Picture show:

Hardness 55 Shore A Sealing Element Elastic Rubber Seal Ring RoHS 3