O-ring: O-ring means O-shape cross section seals. It can apply to seal all liquid, gaseous media. It excellent performance is also widely used in general pneumatic and hydraulic machinery.
What is an O-ring?
O-ring (O ring, O-ring, Oring, o-rings), is a O-shape cross-section elastomer seal. Different material solve different problems. O-ring is the cost-effective and primarily for sealing.
CNL produces different specification o-rings. Sizes illustrate the inner diameter and cross section. O-ring specification of AS586 type, JIS type, P type, G type, S type, AS type, JASO type, Metric type, Bs type and Park type are available. All products are qualified ISO9001: 2008.
We can produce different kinds of material based on customers' demand, such like NBR, SILICONE, FKM, EPDM, PU, FFKM…… etc. Rubber materials and characteristics please refer to "Rubber Characteristics and Appliocation.
O-Ring Applications :
Electronics Industry, Automobile Industry, Machinery Industry, Electric equipment, Medical equipment, Sports Equipment, Household Items and other Industries rubber parts.
O-Ring Characteristics :
O-ring can be reused
O-rings require very little room
Easy to set-up
Static and Dynamic sealing
It is common sealing solutions
Many sizes available and easy to obtain
One piece groove design reduces hardware and design costs
Compound material choice for different purpose
O-ring selection and design
O-rings known as O-rings, Orin, Orings, O shape ring are sealing and preventing unwanted loss. It should be considered a sufficient sealing surface contact pressure, a smaller friction and operating temperature to avoid permanent deformation.
1. Low Friction
The friction coefficient should be low between Oring and the device. That can make o-ring life growth and well abrasion resistance. It will still have a good seal damping effect after wearing.
2. Recommended O-ring application service temperature
O-ring material may be failure due to high temperature or low temperature, chemical corrosion, vibration, wear and movement. At very low temperatures, almost all engineered materials are hardened and can not be sealed; at very high temperatures, the material may burn or decompose. So we should consider those circumstances to select the material.
3.Comoression forces and Durability
(1) Hardness : The lower hardness and the bigger compression; The higher hardness and the smaller compression. The low pressure will use the softer hardness and otherwise the opposite.
(2)Material : The compression set on/about 20% , recommend NBR, EPDM, SILICONE material; The compression set on/about 15%, recommend special FKM, FKM/VITON and PU.
O rings Materials
Nitrile Rubber (NBR): With butadiene, acrylic gel copolymer chemical structure. Nitrile rubber O rings features are oil resistant, water resistant, abrasion resistant, high oil pressure resistant, non-polar solvent resistant.
Hydrogenate Nitrile Rubber (HNBR): With partial double-stranded by hydrogenation in the gelatin chemical structure. Hydrogenate Nitrile Rubber O rings features are wear, corrosion, tensile, tear, oxygen and compression deformation properties, suitable for laundry, dishwashing detergents.
Silicone Rubber (SI, VMQ): With Silicone main chain from silicon (-si-o-si) combined chemical structure. Silicone Rubber O rings features are heat-resistant, cold, non-toxic, with good electrical insulation properties, not resistant to oil, ozone and solvents.
Fluoro Carbon Rubber (VITON, FKM, FPM): With hexafluoropropylene fluoroethylene copolymer chemical structure. Fluoro Carbon Rubber O rings features are heat-resistant, oil-resistant, chemical-resistant, solvent-resistant; not resistant to ketones, esters and nitrate-containing mixtures.
Perfluorinated rubber (FFKM): The perfluorinated rubber material is the rubber material with the highest temperature resistance, chemical solvent resistance and clean properties among all the elastic sealing materials. It can be made into various perfluorinated O-rings, perfluorinated gaskets (GASKET), perfluorinated packing, perfluorinated seals, and perfluorinated oil seals (Oil Seal).
Ethylene Propylene Rubber (EPDM, EPT): With ethylene and propylene copolymer (terpolymer) chemical structure. Ethylene Propylene Rubber features are anti-aging, ozone resistance, weather resistance, chemical resistance, abrasion resistance, water resistance, alcohol resistance and ketones, not for food use or exposure to aromatic hydrogen.
Fluorinated Silicone Rubber (FLS, FVMQ): With Si-o-si fluorinated chemical structure. Fluorinated Silicone Rubber features are oil resistant, solvent resistant, oil resistant and resistant to high and low temperatures, not resistant to brake oils or ketones.
Styrene Butadiene Rubber (SBR): With copolymer of butadiene and styrene chemical structure. Styrene Butadiene Rubber features are wear-resistant, aging-resistant, water-resistant, low-cost, not easy to deform at high hardness, not resistant to strong acids, ozone, oils, greases and greases and hydrocarbons.
Neoprene Rubber (CR): With chloroprene chemical structure. Neoprene Rubber features are good elasticity and weather resistance, ozone, heat, medicine, grinding, atmospheric aging and animal and vegetable oils.
Polyacrylate Rubber (ACM): With Acryl acrylate copolymer chemical structure. Polyacrylate Rubber features are high temperature oil resistance, weather resistance, oxygen resistance, heat resistant water, low temperature.
Natural Rubber (NR): With Polyisodecane chemical structure. Natural Rubber features are good elasticity and wear resistance, water, not resistant to strong acid and aging.
Hypalon Polyethlene Rubber (CSM): With Chlorosulfonated polyethylene chemical structure. Hypalon Polyethlene Rubber features are weatherproof, aging resistant, ozone, pharmaceutical, grinding, and can be used to prevent leakage in water.
Butyl Rubber (IIR): With butene with a small amount of iso-prenes polymer. Butyl Rubber features are weather resistant, ozone resistant, animal or vegetable oil resistant and oxidizable chemicals.
Urethane Rubber (PU): With Polyurethane chemical structure. Urethane Rubber features are wear-resistant and high-pressure resistant, but it is not resistant to high temperatures and its mechanical strength is particularly superior.
Fitting with buffer: When the suction cups contact to the object, to reduce the force and to compensate the position different between the working objects.
Oil Seal: Oil seal is also known as metal case and grease seal. To prevent lubricant leakage and to seal other fluids, gases and powdered or granular solids to the machine and vehicle when operation.
Customized Part OEM.ODM: CNL CNC department can support rapid processing all kinds of sealing products request. Co-operating with clients to develop new products and improving sealing result.