O-ring-stocks.eu | The International O-Ring Webshop

Looking for a reliable O-ring supplier for fast delivery, the best quality and technical support from experts in the field? At O-ring-stocks, you are in good hands! With more than 30 years of experience and a stock of more than 430 million O-rings in over 130,000 different types and sizes, we always have the perfect O-ring for your application.

As an international O-ring shop, we support buyers, maintenance teams and engineers with a practical approach: quickly finding what you need, providing the right information and delivering as agreed. We help you choose the right material for your application and provide advice tailored to your needs. This means you are not simply ordering an “O-ring”, but a solution that suits your specific situation.

Find your O-ring by material

NBR - Nitrile O-rings

NBR O-rings offer good resistance to mineral oils, aliphatic hydrocarbons, and various hydraulic and silicone-based fluids. They operate in a temperature range of -30°C to +120°C but are not resistant to aromatic or chlorinated hydrocarbons, polar solvents, HFD fluids, brake fluids, ozone, or ageing.

EPDM O-Rings

EPDM O-rings are resistant to hot water, steam, polar solvents, acids, bases, silicone oils, brake fluids, ozone, weathering, and ageing. They have a temperature range of -55°C to +150°C (depending on cross-linking method) but are not resistant to mineral oils, greases, or fuels.

FKM - FPM - Viton® O-rings

FKM O-rings offer excellent resistance to mineral oils, fuels, hydrocarbons, HFD fluids, silicone oils, non-polar solvents, ozone, and ageing. They operate in a temperature range of -15°C to +200°C (special grades down to -50°C) but are not resistant to brake fluids, polar solvents, hot water, steam, amines, alkalis, or low-molecular acids.

FFKM - FFPM O-rings

FFKM O-rings provide excellent resistance to nearly all chemicals, as well as ozone, weathering, and ageing. They have a temperature range of -15°C to +270°C (up to -40°C to +340°C for special grades) but are not resistant to fluorine-containing compounds.

VMQ - MVQ - Sillicone - O-Rings

Silicone O-rings offer good resistance to vegetable and animal fats, water up to 100 °C, acids, bases, aliphatic oils, ozone, and aging. They operate in a temperature range from -60 °C to +200 °C (up to +230 °C with special compounds). However, they are not resistant to silicone oils, aromatic oils, fuels, steam above 120 °C, or strong acids and bases.

PTFE - Teflon® O-rings

PTFE O-rings offer excellent chemical resistance, a very low friction coefficient, and are ideal for dynamic applications. They perform in a wide temperature range from -260°C to +200°C but are not resistant to high-energy radiation or molten alkali metals.

Find your O-ring by material

Show all O-ring materials

We offer an impressive range of sealing solutions with O-rings

O-rings

We offer O-rings in various sizes and materials!

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O-ring Cord

Round rubber cord provides custom solutions for various industries.

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X-rings

Sealing rings (Quad-rings) with an X-shaped cross-section.

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Tools and kits

A wide range of sealing kits with O-rings and related tools.

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Do you have a question about an O-ring?

We’re here to help!

If you have any questions about the best material for your specific application, you can always contact one of our specialists. They’ll be happy to help you find the right material for your sealing needs.

phone Call: +31 38 202 40 43

alternate_email Email: info@o-ring-stocks.eu

schedule Opening hours: Mon - Thu 8:15 - 17:15 | Fri 8:15 - 15:00

We understand what the industry needs

Thanks to our extensive stock, competitive prices and expertise, we are the preferred O-ring supplier for both businesses and private customers across a wide range of industries worldwide. We supply O-rings to, among others, the oil & gas industry, the food & beverage industry and everything in between and around them. From chemical resistance and high temperatures to hygiene standards and high pressure. With our technical expertise and impressive stock, we have already helped more than 100,000 customers with both maintenance and production, delivering consistent quality and reliable lead times.

About us

Discover different O-ring applications by industry

General Industry

O-rings are widely used to seal hydraulic and pneumatic systems. They are essential for preventing leaks in standard machinery and equipment.

Food & Beverage Industry

O-rings are used in pumps, valves and pipelines where hygiene is crucial. They must comply with food safety standards such as FDA and EC 1935/2004.

Pharmaceutical & Medical Industry

O-rings ensure sterile sealing in medical equipment and production lines. They are often manufactured from special materials such as EPDM, FKM, FFKM or PTFE with pharmaceutical certification.

Oil & Gas Industry

O-rings are used in subsea systems, valves and compressors where high pressure and extreme conditions prevail. They must meet safety requirements such as AED and NORSOK M710.

View all industries

Wholesale and supply of O-rings in large volumes

For organisations that regularly purchase larger volumes, we offer a scalable supply solution as a wholesale O-ring partner. As an O-ring warehouse with a very extensive stock and fast logistics, we support manufacturing companies, MRO teams and engineers who require reliable supply and continuity.

Knowledge Base of O-Rings-Stock

Trust in quality

We conduct research to ensure the highest quality, thoroughly analyzing and improving product failure causes, material properties, strength, temperature, and dimensions. So you can rest assured you've made the best decision and that we can offer you the best possible advice.

NBR - Nitrile Rubber
Good resistance to: mineral oils, greases, fuels and hydraulic fluids.
Not resistant to: ozone, UV, weathering and strong oxidizing agents.
Temperature range: -40°C to +120°C.
Price indication: €

EPDM
Good resistance to: water, steam, ozone, UV, weathering, acids and alkalis.
Not resistant to: oils, greases, fuels and mineral oil products.
Temperature range: -45°C to +150°C.
Price indication: €

FKM - Viton® - FPM
Good resistance to: high temperatures, oils, fuels, solvents and many chemicals.
Not resistant to: hot water, steam, ketones and certain amines.
Temperature range: -20°C to +200°C.
Price indication: €€€

FFKM - Kalrez® - FFPM
Good resistance to: extreme temperatures, aggressive chemicals, acids, solvents and steam.
Not resistant to: only a few specific fluorinated media and exceptional process chemicals.
Temperature range: up to +340°C.
Price indication: €€€€€

VMQ - Silicone - MVQ
Good resistance to: high and low temperatures, ozone, UV and hygienic applications.
Not resistant to: oils, fuels, wear, tearing and dynamic loads.
Temperature range: -60°C to +200°C.
Price indication: €€

PTFE - Teflon®
Good resistance to: almost all chemicals, corrosive substances, low friction and high temperatures.
Not resistant to: dynamic applications where high elasticity is required.
Temperature range: -200°C to +260°C.
Price indication: €€€

HNBR
Good resistance to: oil, fuels, heat, wear, ozone and high mechanical loads.
Not resistant to: strong acids, ketones, esters and chlorinated hydrocarbons.
Temperature range: -30°C to +150°C.
Price indication: €€

FEP Encapsulated
Good resistance to: aggressive chemicals, solvents, cleaning agents and hygienic applications.
Not resistant to: dynamic applications and situations where high elasticity is required.
Temperature range: depends on the core, often up to approximately +200°C.
Price indication: €€€€

Polyurethane - PU - AU
Good resistance to: wear, high pressure, mechanical loads, hydraulics and pneumatics.
Not resistant to: high temperatures, steam, strong acids and strong alkalis.
Temperature range: -30°C to +100°C.
Price indication: €€

FVMQ - Fluorosilicone
Good resistance to: low temperatures, fuels, oils, ozone and aerospace applications.
Not resistant to: strong mechanical loads, wear and dynamic applications.
Temperature range: -60°C to +200°C.
Price indication: €€€

FEPM - Aflas®
Good resistance to: steam, acids, alkalis, amines, oil/gas media and high temperatures.
Not resistant to: aromatic fuels, ketones and some chlorinated solvents.
Temperature range: -10°C to +200°C.
Price indication: €€€€

CR - Neoprene
Good resistance to: moisture, ozone, weathering, refrigerants and mild chemicals.
Not resistant to: strong acids, strong alkalis, aromatic solvents and heavy chemical exposure.
Temperature range: -40°C to +120°C.
Price indication: €€

ACM - Acrylic Rubber
Good resistance to: hot oils, oxidation, ozone and automotive applications.
Not resistant to: low temperatures, water, steam, acids and alkalis.
Temperature range: -20°C to +150°C.
Price indication: €€€

ECO - Epichlorohydrin Rubber
Good resistance to: oil, fuel, ozone, low gas permeability and hydraulic applications.
Not resistant to: strong acids, strong alkalis and high temperatures.
Temperature range: -40°C to +120°C.
Price indication: €€€

60 Shore A
When to choose: for low pressure, light sealing and applications where high flexibility is required.
Maximum pressure indication: low pressure, usually up to approximately 50 bar depending on the groove and clearance gap.
Elasticity: very flexible, adapts well to the sealing surface and requires relatively low installation force.

70 Shore A
When to choose: the standard choice for most industrial O-ring applications.
Maximum pressure indication: medium, often up to approximately 100 bar without a back-up ring when the groove is correctly designed.
Elasticity: good balance between flexibility, sealing force and wear resistance.

75 Shore A
When to choose: when slightly higher pressure resistance is required than with 70 Shore A, without losing too much elasticity.
Maximum pressure indication: medium to increased, often up to approximately 150 bar depending on the application and clearance gap.
Elasticity: slightly less flexible than 70 Shore A, but still suitable for general sealing applications.

80 Shore A
When to choose: for higher pressure, heavier mechanical loads or increased risk of extrusion.
Maximum pressure indication: increased, often up to approximately 200 bar with a small clearance gap and correct installation.
Elasticity: noticeably stiffer than 70 Shore A, with higher installation force and better resistance to deformation.

90 Shore A
When to choose: for high pressure, heavy mechanical loads or when maximum extrusion resistance is required.
Maximum pressure indication: high, often from approximately 200 bar and above, depending on the clearance gap, material and possible use of back-up rings.
Elasticity: hard and less flexible, requiring more installation force and making it less able to follow small surface irregularities.

58 Shore D
When to choose: for very hard seals or plastic sealing materials such as PTFE, where chemical resistance, dimensional stability and low friction are more important than elasticity.
Maximum pressure indication: high, but strongly dependent on the material, groove design and support of the seal.
Elasticity: very limited. Shore D is much harder than Shore A and behaves less like rubber. The material hardly springs back and often requires an adapted groove design.

Important note
The maximum pressure resistance of an O-ring is not determined by hardness alone. The clearance gap, groove dimensions, temperature, pressure direction, material type and use of back-up rings also have a major influence. Shore A and Shore D are different hardness scales and cannot be compared one-to-one. Therefore, use these values as a general guideline only.