O-Ring Compression Set

The biggest reason of O-ring failure is compression set. An effective O-ring seal requires a continuous “seal line” between the sealed surfaces. The establishment of this “seal line” is a function of gland design and seal cross-section which determines the correct amount of squeeze (compression) on the O-ring to maintain seal integrity without excessive deformation of the seal element.

The following suggestions may improve the rate of compression set:

1. Use “Low Compression Set” O-ring material whenever possible.

2. Select O-ring material compatible for the intended service conditions (a material with higher temperature capability or greater chemical resistance).

3. Reduce the system operating temperature.

4. Check frictional heat build-up at seal interface and reduce if excessive.

5. Verify groove dimensions are consistent with recommended Parker practices


For further Information
Website - https://www.fitcorings.com
Email - fitco@fitcorings.com

O Ring Tolerence Chart

Fitco are oring provider since 1995, We have in-house manufacturing and worldwide manufacturing partners for supply all size oring and seals according to international standard: AS 568, ISO 3601, DIN 3771, JIS B2401. We are exporting o-ring worldwide and supply in various materials.

O-Ring is selected as the bore or rod/shaft diameter and housing dimensions in both metric and inch size, so you know exactly which part you need. 

Standard O Rings Cross section widely used 

BS 1806  BS ISO 3601-1 SAE AS 568	Aerospace sizes to  BS ISO 3601-1	BS 4518	Inch sizes
0.070" 1.78mm	0.071" 1.80mm	1.6mm	0.063"
0.103" 2.62mm	0.104" 2.65mm	2.4mm	0.094"
0.139" 3.53mm	0.140" 3.55mm	3.0mm	0.125"
0.210" 5.33mm	0.209" 5.30mm	5.7mm	0.188"
0.275" 6.99mm	0.276" 7.00mm	8.4mm	0.250"

ISO O Rings Tolerance Chart

Fitco O Rings Tolerence Chart

For further details : fitco@fitcoseals.com
https://www.oringstore.com

Sealing Materials for O-Rings ,Oil Seals, Hydraulic Seals

Material of O Ring plays an important role in increasing performance & its life in any particular application.

Two things are equally important for reliable performance of an O Ring , the right size and the right material.

Sealing Materials for O-Rings ,Oil Seals, Hydraulic Seals

• Polyurethane (P.U)
• EPDM Rubber
• Fluorinated Rubber FKM(Viton)
• PTFE/ Glass Filled PTFE
• Nitrile Rubber (NBR)
• Silicone Rubber
• Poly Acrylic Rubber
• PTFE/ Bronze filled PTFE
• H-NBR Rubber
• Polychloroprene Rubber (C R)
• PTFE / VIRGIN
• PTFE/GRAPHITE filled PTFE

Since 1995 in supply of O Rings & Seals.

Extensive stock range, Knowledge and expertise, Fast and Efficient.

Contact for all your sealing needs.

Fitco Engineers Pvt Ltd

Bandra West ,Mumbai 400050, India

Mfg of O Rings , Seals, Silicone Rubber Extrusions, PTFE Parts

Email :  sales@fitcoseals.com  Web: fitcoseals.com / oringstore.com

www.oringstore.com - Largest O Ring Seal range from Small to Large Diameter  

O-Ring Kit - Inch sizes of o rings

We have variety of O-Ring kits of UK and US standard sizes

O Ring Kits contains the most often used Imperial sizes of AS-568 standard size O-Rings , our O-Ring Kit is industry standard. O-Ring kit contains 30 sizes of o-rings in total quantity 382 pieces of o-rings of the most often used AS568 Standard sizes. The outside top cover has detailed, labels indicating the sizes and quantities of the o-rings in each compartment , and the highly attractive red styrene box features both post and recess styles of o-ring retention.

Fitco O-Ring Kits

Material : Nitrile (NBR) with 70 Shore A Hardness
Orders are shipped from our stock within 3-5 days .

For Further Details Email us : sales@fitcoseals.com
www.fitcoseals.com
www.oringstore.com

Miniature O-rings, large special O-rings, continuously moulded and spliced cord - O-Ring Store

We supply O-Rings to Distributors, MROs, OEMs, designers, engineers, maintenance staff and plant operators.

FITCO are a leading supplier of O-rings and Seals from last 23 years established since 1995 - our warehouse is located in Mohali & Mumbai

O-Rings  - Manufactured to US and international standards: AS 568B, ISO 3601, DIN 3771, JIS and metric. Custom sizes of almost any dimension. 
 

 

O-Rings

Back-up Rings - Prevent extrusion in high-pressure applications and help retain lubricant, extending O-ring life.

O-Ring Kits - Kits are conveniently arranged with various size O-rings for repair, assembly and workshop.

Accessories - Products to assist O-ring users include assembly sizing cones and extraction tools.


Compounds - O-rings can be molded in a wide range of compounds in hardnesses from 60 to 95 Shore A. These materials include:

• Acrylonitrile-Butadiene (NBR) • Butyl (IIR) • Chloroprene (CR) • Ethylene Acrylic (AEM) • Ethylene Propylene (EPDM) • Fluorocarbon (FKM) • Fluorosilicone (FVMQ) • Hydrogenated Nitrile (HNBR) • Perfluoroelastomer (FFKM) • Polyacrylate (ACM) • Silicone (VMQ)

Let us know for your requirement of O-Rings

For Details visit us :

sales@fitcoseals.com

www.fitcoseals.com

www.fitcoseals.com

O-Rings Design Guidelines, Specifications - FITCO

O-Rings are one-piece molded objects made from elastometric seal with a circular cross-section. They are used to prevent fluid movement between mechanical parts by maintaining contact with the inner and outer walls enclosing the ring. The resiliency of the rubber provides a zero-pressure seal. When pressure is applied, the fluid forces the O-Rings across the groove and causes more deformation. This leads to the ring flow up to the fluid passage and seal it against leakage. O-Rings are an example of self-energize seals, meaning they relay pressure inside the container (or pipe) to give them the pressure necessary to form the seal. O-Rings are inserted into cavities called glands, and they are used in either axial or radial seal designs. An O-Ring is described by its inner diameter, its outer diameter, its material hardness  (or durometer) and its material composition. Dimensions of O-Rings are given in ANSI/SAE AS568A. A seven-digit number is assigned to each ring to designate the ring size and their composition. The first three digits are standardized and they specify the ring size. However, different manufacturer use different system to specify the composition. For this reason, the ANSI/SAE AS568A only publishes the first three digits for dimension specification. When installed, an O-Ring compresses and deforms slightly into the free space within the grove to from a proper seal. The ring's cross-section is approximately 20 percent greater than the gland depth and the groove width is about 1.5 times larger than the ring's width.

Symbol Definitions

Parameters used in the discussion of O-Rings are defined in the following table:  O-Rings Parameters Symbol Parameter Units Description ID Inner Diameter inch (cm) Diameter of the inside edge of the cross-section. CSmax Maximum Cross-Section Diameter inch (cm) Upper bound on the cross-section diameter for a given set of input requirements. CSmin Minimum Cross-Section Diameter inch (cm) Lower bound on the cross-section diameter for a given set of input requirements. CStol Cross-Section Tolerance inch (cm) Manufacturing tolerance on the O-Rings cross-section diameter. Cmax Maximum Compression Factor N/A Upper bound for the cross-section compression when the O-Rings is seated in the gland; used as a design input. Cmin Minimum Compression Factor N/A Lower bound for the cross-section compression when the O-Rings is seated in the gland; used as a design input.

Radial Gland Symbol Definitions Parameters used in the discussion of glands for radial seals are defined in the following table: Gland Parameters for Radial Seals Symbol Parameter Units Description Bd Bore Diameter inch (cm) Inner diameter of the bore which confines the outer diameter of the O-Rings. Btol Bore Diameter Tolerance inch (cm) Manufacturing tolerance on the bore diameter. Gd Groove Diameter inch (cm) Minimum diameter of the gland which confines the inner diameter of the O-Rings. Gtol Groove Diameter Tolerance inch (cm) Manufacturing tolerance on the groove diameter. GW Groove Width inch (cm) Groove length in the axial direction; must be large enough to accommodate O-Rings axial expansion.

Design Guidelines Using the diametrical clearances given by the O-Rings' manufacturer usually provides the most effective and reliable sealing. They often provide information that can be used to estimate the gland depth required in O-Rings applications. This information is necessary for designing a system with a proper clearance gap so that the ring material will not extrude into the gap when subjected to pressure. The extruded ring material will quickly wear and fray, severely limiting the service life of the seal. Other factors, such as system pressure, ring compound and hardness, can affect the radial clearance used. There are number of ways to correct an extruding O-Rings application:

Reduce the clearance gap in the system by modifying the dimensions of the system.  Reduce the system operating pressure. Install backup rings in the groove with the O-Rings to prevent extrusion.  Use harder O-Rings compound.

These modifications, however, have their drawbacks. For example, reducing system-operating pressure may affect the operational parameter of the system and harder O-Rings may result in higher friction and a greater tendency of the seal to leak at low pressure.  In general, the ring's cross-section is about 20 percent great than the gland depth and the groove width is approximately 1.5 times the ring's cross sectional diameter if the its cross-section is larger than 1/16 in.  The surface finish of the groove has a great impact on the performance of the seal. There are two things to consider for determining the surface finish roughness:

1. Whether it is a static seal in which the O-Rings does not come into contact with any moving parts or a dynamic seal where relative motion exist between the O-Rings and other moving parts. and  2. In the case of static seal, whether the seal is for a liquid system or a gaseous system.

The table below sums up the intended application with the proper surface finishes: Application Surface finish roughness Static liquid system 0.81 - 1.60 mm Static gaseous system 0.41 - 0.81 mm Dynamic (sliding motion) 0.20 - 0.41 mm Dynamic (rotary motion) 0.41 - 0.81 mm It is desirable to circumferentially stretch the O-Rings slightly so that it sits securely in the groove during assembly. This can be done by selecting an O-Ring with an internal diameter 2% to 3% smaller than the groove diameter. For Further Details Email us : sales@fitcoseals.com www.oringstore.com www.fitcoseals.com

O-Rings Seals for Connector and Metal Tube Adapters Assemblies - FITCO

Tube Assemblies - Hydraulics Hose and Hose Fittings

For over a decade, we are manufacturing O-Rings for metal tube assemblies because of our precision engineering and quality control practices, companies have used our O-Rings for tube assemblies in hydraulic fluid transfer, fuel and oil, lubrication, fleet, automotive, and military applications.

O-Rings for Fuel Injection Tubes

O-Rings are used in Fuel Injection Tubes are used in large numbers in all kinds of diesel engines for automobiles, ships, construction equipment, and agricultural machinery

O-Rings for CRDi Tubes & Hydraulic Tubes

Common Rail technology operates at very high-pressure to achieve better air-fuel mixing and as a result, higher engine efficiency. We offer a qualitative range of High Pressure Hydraulic Tubes.

O-Rings for EGR & Bellows

EGR tube assembly carries unburnt gas vapors from the exhaust manifold chambers to the intake manifold and is reintroduced into the engine firing sequence

We expertise in O-Rings and   work in team to develop highly customized  O-Rings for tube assemblies for their OEM products.

FITCO works to ensure that every component and assembly we supply meets our highest expectations for quality and performance. Our experienced team leverages their thousands of hours of quality testing experience to closely inspect and approve each and every product that passes through our facility, ensuring that you receive products that enhance and empower your equipment.

As a quality-source supplier, Fitco Engineers Pvt Ltd consolidates and simplifies the engineering, specification, and purchasing processes for you. From the prototype stage to production, you can count on Fitco expertise for the essential o-rings for  fluid transfer systems of your machinery.

O-Rings Applications:

·         Hydraulic

·         Air Conditioning and Refrigeration

·         Truck and Bus

·         Pneumatic

·         Cooling

O-ring Installation Instructions & useful with O-ring seal connectors and adapters.

O-ring seal fittings are used for direct connection to existing pipe thread or straight thread ports which have a smooth, flat surface perpendicular to the threaded port. O-ring seal fittings provide leak-tight sealing on both vacuum and high pressure systems. The standard Buna N O-ring is completely contained in a precision groove, to prevent O-ring extrusion at high pressure. The precision groove also provides a controlled squeeze for a vacuum-tight seal.

Note:

When installing an O-ring port:

1. Hand-thread until the O-ring compresses on the port end.

2. Snug the fitting to the port with a wrench to completely compress the O-ring.

3. Always use a back-up wrench to hold the O-ring seal fitting body, when connecting or

disconnecting a end.

For Further Details Contact

Email: sales@fitcoseals.com

www.oringstore.com

www.fitcoseals.com

Understanding Automotive O-Rings and Seals

Automotive O-Rings and Seal which is used for filling the gap between the two components in order to ensure that there is no leakage between them during compression stage. Automotive seals can bear both low and high compressive loads. These automotive parts come in different designs, shapes and specifications. Commonly used seal include o-rings, O-rings can be used in static applications and in dynamic applications, in the automotive industry o-rings is to seal at -40°C without leakage.

The stationery sprung elements that are used for holding tightly the various components of an automobile are automotive o-rings, The materials and design is such that the O-rings manufactured for the automotive industry can function effectively in extreme temperatures, under pressure, and in the presence of harsh liquids and gases

Seals are an imperative part of the automotive industry. They are used in various applications and components. Seals enable a vehicle and its engine to function smoothly. These components are used across automotive applications like motorcycles, all terrain vehicles and other off-road heavy-duty equipment.

Although seals form a small part of the constitution of a vehicle or engine, they serve a bigger purpose. Some of these functions are : Enclosing liquid and gases in a chamber, Keeping dust and other contaminants away from the integral parts of the component. They also keep different types of liquids and gases away from one another, Protection of bearings.

Generally, automotive seals are corrosion-resistant and have long service lives. Depending on the type of engine used and its emission standards, the material of the seals can vary.

Customer demand and government regulations continue to push the automotive industry to improve efficiency, and many of these improvements affect o-ring and seal materials .

For additional information on the best material to solve your sealing challenges, please contact us : sales@fitcoseals.com

O-RINGS FOR AUTOMOTIVE APPLICATIONS

O-Rings developed and manufactured by FITCO are safe sealing solutions for automotive and truck applications. O-Rings can be used in static or dynamic assemblies. Our expertise covers all demanding automotive and truck applications like fuel, air intake, filtration, braking, cooling, HVAC, SCR, transmission, etc. 

According to your requirements, our engineering teams will develop optimal solutions with custom dimensions or compounds, including high cleanliness range or specific surface treatments reducing friction forces or facilitating the use in automatic feeding distribution systems

O-RINGS

Our O-Rings ensure perfect static and dynamic seals between two parts assembled radially (shafts) or axially (covers). Our O-Rings can withstand the most extreme temperatures and fit in the smallest spaces.

TECHNICAL FEATURES

• A wide compound range : NBR, FKM, EPDM, HNBR, CR, VMQ ,FVMQ.
• Temperature range -50°C to +250°C.
• Pressure range from high vacuum up to 2000 bar.
• O-RING MATERIAL

www.oringstore.com

Oil Seals,O-Rings,Hydraulic Seals | FITCO

Fitco Engineers Pvt Ltd

Fitco is a leading manufacturer of Oil Seals,O-Rings,Hydraulic Seals,Bonded Seals,Rubber Cords,PTFE Seals for wide variety of markets,expert in Seals and are exporting across globe countries like USA, UK, Brazil, Turkey, Africa, Saudi Arabia, Kuwait and many more. We at Fitco provide wide range of Seals for industries including oil and gas, marine, construction, automotive, agriculture, material handling, repair shops, pharmaceutical and for many industrial plant applications. We are a serving to both in After market and as original equipment supplier

Rubber Seals and Sealing Solution for Industrial Machinery , Agricultural and Farming Equipments, Automotive Industry.

Fitco was founded in 1995 in India and is a leading worldwide supplier of Seals, we are an ISO 9001:2008 Quality certified by DNV (Det Norske Veritas),DNV Certificate No.170948-2014-AQ-IND-RvA.

http://fitcoseals.com/index.html
Email :sales@fitcoseals.com

O-Rings - Rubber Cords | FITCO

Wide range of O-Rings in metric and inches sizes,Rubber O-Rings for OEM and MRO

O-Rings can be custom made to fit your engineered gland, which can seal against a variety of high temperatures, cryogenic conditions and chemicals

O-Rings for Industrial, Automotive and General Engineering Industry .

We cater to all major industries • Hydraulic Fittings • Valves and Pumps • Food Processing • Plumbing Products • Dairy/Food Processing • Shipping & Mines • Heavy Industries • Automotive • Electronics • Filtration • Medical.
We supply Rubber Cords ,Viton Rubber Cords ,Silicone Rubber Cord, EPDM Rubber Cord, Nitrile Rubber Cord. Rubber Cord is available in running length to meet your immediate requirement

Fitco Engineers Pvt Ltd

Founded in 1995 in India , Fitco is leading worldwide supplier of O-Rings Seal ,we have standard range of o-rings and seals in stock.
We are an ISO 9001:2008 Quality certified by DNV (Det Norske Veritas),DNV Certificate No.170948-2014-AQ-IND-RvA.

http://oringstore.com/index.html
Email :sales@fitcoseals.com 

O-Ring Materials- FITCO

O-Ring Materials- FITCO

O-Rings can come in a variety of sizes and have a wide range of uses,it can also be made from a number of different substances. Here’s a guide to the kinds of O-Ring materials we use, how they are used, and when to avoid using them.


Nitrile (Buna, NBR): A widely used, economical material that has strong wear resistance and mechanical properties.
Temperature: -55 to 250 degrees Fahrenheit
Applications: Petroleum based oils and fuels, dynamic applications
Avoid: Break fluids and ozone

Hydrogenated Nitrile (HNBR): Nitrile base with added chemical strength and resistance following hydrogenation.
Temperature: -50 to 300 degrees Fahrenheit
Applications: Water and steam up to 300 degrees Fahrenheit, fuel systems, oil resistant and high abrasion applications
Avoid: Strong acids and polar solvents such as ethers and ketones

Polyacrylate (ACM): Widely used by auto makers in power steering and transmission systems.
Temperature: -15 to 350 degrees Fahrenheit
Applications: Mineral oil, engines, gear boxes, power steering, transmissions
Avoid: Cold temperatures, hot water, steam

Ethylene-Propylene (EPDM): Strong ozone and chemical resistance
Temperature: -55 to 275 degrees Fahrenheit, 300 degrees Fahrenheit when used with peroxide curing agents
Applications: Brake systems, glycol-based fluids, H20 steam
Avoid: Mineral oil products and hydrocarbon fluids

Chloroprene (Neoprene, CR): The first commercial synthetic rubber developed, chloroprene has good mechanical properties over a wide range of temperatures.
Temperature: -40 to 250 degrees Fahrenheit
Applications: Refrigeration, due to its excellent ozone resistance, low-temp H20
Avoid: Esters, ketones and aromatic and chlorinated hydrocarbons.

Butyl: An all-petroleum compound, butyl has low gas permeability and good resistance to sun exposure and ozone.
Temperature: -70 to 400 degrees Fahrenheit
Applications: Life science and medical devices, FDA applications, numerous specialized compounds for specific material certifications
Avoid: Highly abrasive applications and water and steam over 250 degrees Fahrenheit

Fluorosilicone (FVMQ): Broad temperature performance and strong fuel and solvent resistance, but weak abrasion resistance due to high friction.
Temperature: -75 to 400 degrees Fahrenheit
Applications: Aerospace, fuel and mineral oil
Avoid: High temperature air, dynamic applications

Flurocarbon (Vikton, FKM): The high fluorine levels in fluorocarbon rings give them excellent swelling and permeability resistance. They also feature high temperature and chemical resistance.
Temperature: -15 to 400 degrees Fahrenheit
Applications: Broad chemical resistance, transmission and blended gasoline
Avoid: Low temperatures, ketones and amines

Tetrafluoroethylene-Propylene (AFLAS): Excellent chemical and temperature performance.

Temperature: 15 to 450 degrees Fahrenheit
Applications: Aerospace, steam, hot water, oil fields
Avoid: Chlorinated hydrocarbons, ketones, acetic acid

Perfluoelastomer (FFKM): Of all elastomers, this one has the highest performing temperature and chemical properties, as well as low out-gassing and extractable properties.
Temperature: -15 to 600 degrees Fahrenheit
Applications: Semiconductors, chemical processing, vacuum applications
Avoid: Fluorinated solvents and perfluorinated lubricants

If you have questions about O-Ring materials, contact Fitco Sealing
Solutions
email: sales@oringstore.com
http://oringstore.com

O-Ring Store

           Our specialty is solving sealing problems for     

                     original equipment manufactuers.

* Dimensions of the o-ring are defined by inside diameter (ID) and the cross section (CS).

* Dynamic o-rings and seals are used in an application where there are moving parts.

* Static o-rings and seals are used in an application where nothing is moving.

* On elastomers: Shore A scale is the most common scale used for the hardness of an Elastomer.

* NBR is used widely in o-rings ,it has the characteristics of mineral oil and abrasion resistance.

* HNBR is known for its physical strength and retention of properties after long-term exposure to heat.

* Silicone o-rings and seals have good resistance to ozone and weather.

* Viton Extreme  o-rings are used for  oil & gas, chemical processing, utilities, automotive.

* EP, EPDM o-rings are resistant to many dilute acids and alkalis and also to polar solvents.

* Neoprene o-rings are commonly used  in refrigeration industry due to excellent resistance

    to ammonia, Freon.

* Polyurethane o-rings are resistant to abrasion and extrusion plus they are very tough overall.

* FEP encapsulated o-rings are used in the food and pharmaceutical industries for hygiene.

* O-rings are popular because they are inexpensive, easy to make, reliable and simple to install.

                             We solve sealing problems for Different Applications

*Just-In-Time inventory of O-Ring standard sizes: AS568, JIS, JASO,AS871,British metric sizes

Contact us : www.oringstore.com  Email : sales@oringstore.com