What is an o-ring?
An o-ring is a simple and versatile ring-shaped packing or sealing device with a circular cross section (from which the “O” in its name is derived). The purpose of using O-ring seals is to prevent leakage and loss of liquids or gases. They 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.Sealing force changes with system pressure.
Silicone O-ring seal.
The size of o-ring is determined by the inner diameter ID and the wire diameter CS. O-ring size calculation:
outer diameter =inner diameter + 2 x wire diameter (OD = ID + 2x CS).
FKM (Fluorocarbon) O-ring
For general type FKM the service temperature is better limited to approximately from -26℃to 232℃ in static applications, though the service temperature can arrive to 275 C at short time In dynamic applications, it is suitable between -15℃ and 200℃.
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.
NBR(nitrile rubber) O-ring
For NBR the service temperature can be designed from -55 C to 100 C or up to 130 C depending on differenacrylonitrile content and formula. NBR compounds have excellent resistance to abrasion, non-polar oils and solvent, water and permeation (higher
acrylonitrile content will be better). NBR also can be used in conditions of dilute acids, alkalis and salt solution at low temperatures.
To which media is FFKM/FKM/NBR/Silicone Rubber waterproof O-rings resistant?
FFKM/FKM/NBR/Silicone Rubber waterproof o-rings is highly resistant against:
Mineral and vegetable oils and greases
Non-flammable hydraulic fluid
Organical solvents and chemicals
Diesel fuels and Petrol
Aromatic and chlorinated hydrocarbons
FKM o-rings is usually applied in automotive, chemical processing, aerospace and many other industries.
How to keep in stock for the o-ring?
First, do not open the original packing to keep them clean to avoid any damage.
Second, should be stored away from direct sunlight and keep in low humidity environment. Sunlight and moisture make rubber get ageing asap, and get the size of rubber or plastic material changing.
Third, once it was opened, make sure there are no any other objects inside when repacked, and please kindly use the original packing bag.
Fourth, should be stored away from electric machinery which could be produced ozone.
At last, do not string up the o-rings and hang on the nail or metal wire, or the shape of o-ring get changing and damage the end of o-ring lip.
When the color of o-ring is changing or there is white powder(Frosting appears), there is no effect on the o-rings.
1. who are we?
We are based in Jiangsu, China, starting in 2013, and sell to Southeast Asia(18.00%). There are a total of about 11-50 people in our office.
2. how can we guarantee the quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3. what can you buy from us?
0-rings, rubber products, plastic products, metal workpiece,quartz tube
4. why should you buy from us, not from other suppliers?
1. Independent formulation process; 2. World-class O-ring production factory-scale; 3. Systematic operation and management of the whole process; 4. Complete qualification certification;
5. what services can we provide?
Accepted Delivery Terms: FOB,CIF,EXW,DDP,DDU;
Accepted Payment Currency:USD,CNY;
Accepted Payment Type: T/T;