O-rings
Highest quality O-rings
60 years of expertise in O-rings
We have been producing O-rings for over 60 years at our facility in Ammersbek and at our subsidiary in Italy. Our focus lies on high-performance materials such as FKM and FFKM, with FFKM resistant to temperatures of up to 320 °C.
The main advantages of O-rings lie in their simple geometry, their reliable function as sealing elements, and their excellent price-performance ratio.
Our innovation-driven laboratory develops application-oriented compounds, enabling customized solutions tailored to your specific requirements.
The result: maximum media and temperature resistance.
- O-rings according to DIN ISO 3601-1 (replaces 3771), grade characteristic N+S
- Inner diameter of 0.5 – 2000 mm
- Standard and individual special compounds
- O-ring boxes for sorted applications
- Cord rings according to DIN ISO 3302-1, KI.E2
FFKM heat-resistant
Inner diameter
Compression molding
Tools
Tools
Thanks to our own toolmaking, we have the possibility of cost-effective and fast production of your O-ring dimension with special tolerances from the desired or required material.
Storage
For the storage of O-rings, DIN 7716 (guidelines for storage, maintenance and cleaning of rubber products) basically applies. Proper storage is important. The service life of O-rings can be influenced and thus changed by many factors, such as light, heat, humidity, oxygen, ozone, etc. The ideal temperature for storage is between +5 to +20 °C. In general, storage sealed in polyethylene bags is considered optimal. We recommend not significantly exceeding the following storage times:
Comparison Table
| Material | ✔ | ✘ |
|---|---|---|
| ACM | Mineral oils (engine, transmission and ATF oils), aging and ozone | Aromatic and chlorinated hydrocarbons, brake fluids, hot water, steam, acids and alkalis |
| CR | Water, aqueous solutions at low temperatures, refrigerants, aging and ozone | Aromatic hydrocarbons, esters, ketones and glycols |
| EPDM | Brake fluids, various acids and alkalis, hot water and steam, aging and ozone | Mineral oils and greases, natural gas, linoleic acid, ethers, hexane, gas oil, Freon 112 |
| FFKM | Extremely high temperatures (air up to 270 °C – special compounds up to 315 °C), resistant to solvents and over 1600 media | Liquid oxygen, dichloroacetic acid |
| FKM | High temperatures up to 200 °C (medium air), mineral oils, vegetable and animal fats, aromatic and chlorinated hydrocarbons, aging and ozone | Brake fluids, highly polar solvents, acetone, caustic potash, formic acid, acetic acid, chlorobenzene |
| HNBR | Vegetable and animal fats and oils, aliphatic hydrocarbons, water and steam up to 140 °C, aging and ozone | Chlorinated hydrocarbons, solvents, concentrated acids/alkalis |
| NBR | Gasoline, mineral oils and greases, light fuel oil, propane, butane, aliphatic hydrocarbons | Premium fuels with high aromatic content, benzene, acetone, brake fluid, ozone |
| PTFE | Almost all organic and inorganic chemicals (over 1800 media), high and low temperature applications, weathering and aging | Alkali metals in molten or dissolved form, fluorine and fluorine compounds |
| VMQ | High temperatures, hot air, oxygen, water, aging and ozone | Silicone oils and greases, fuels, exhaust gases |
Can consist of the following materials.
| MATERIAL ISO 1629 | BASE ELASTOMER | TRADE NAME / BRAND | TEMPERATURE RANGE (STANDARD) |
|---|---|---|---|
| ACM | Polyacrylate rubber | Nipol® | -20° to +150°C |
| AEM | Ethylene acrylate rubber | Vamac® | -30° to +150°C |
| AU | Polyester urethane | Adipren® | -30° to +90°C |
| CR | Chloroprene rubber | Neoprene® | -40° to +100°C |
| CSM | Chlorosulphonyl polyethylene rubber | Hypalon® | -30° to +120°C |
| EPDM | Ethylene propylene diene rubber | — | -40° to +150°C |
| FEPM | Tetrafluoroethylene propylene copolymer rubber | Aflas® | -30° to +200°C |
| FFKM | Perfluoro rubber | HPF | -15° to +270°C |
| FKM | Fluoro rubber | Viton® | -20° to +200°C |
| FVMQ | Fluorosilicone rubber | Silastic® | -45° to +175°C |
| HNBR | Hydrogenated nitrile butadiene rubber | — | -15° to +150°C |
| IIR | Butyl rubber | Polysar Butyl® | -40° to +130°C |
| NBR | Nitrile butadiene rubber | Perbunan® | -25° to +100°C |
| PTFE | Polytetrafluoroethylene | Teflon® | -200° to +260°C |
| SBR | Styrene butadiene rubber | Intol® | -40° to +100°C |
| VMQ | Methyl vinyl rubber / silicone | Silopren® | -50° to +210°C |
Durability
| MATERIAL | SHELF LIFE |
|---|---|
| NBR | 4 years |
| HNBR | 4 years |
| FKM/FPM | 10 years |
| VMQ | 10 years |
| EPDM | 6 years |
| CR | 4 years |