Polyurethane (AU) seals are among the most versatile and durable materials used in fluid power sealing. They are cast into billets or molds to create the seals used in many of the hydraulic components you see every day, such as pump shaft seals, cylinder pistons and rod seals. The material benefits from many chemical formula types, providing a wide range of sealing characteristics to suit countless applications.
Formerly known as Simrit, but now Freudenberg Sealing Technologies (FST), the Disogrin® brand of polyurethane materials are FST's proprietary compounds used for fluid power seals.
Below are two of the most common polyurethane compounds used in the industry.
AS-568 AU Disogrin 6865
This material was developed to solve difficult hydraulic applications, and was produced specifically for use as O-rings. It possesses extremely high mechanical properties, excellent abrasion, tear and extrusion resistance with low compression set. It has outstanding cold temperature properties and is usable in petroleum based, bio-degradable (synthetic and natural Ester) based fluids.
Performance
- Temperature Range (F) -65° to 225°
- Excellent oil and abrasion resistance
- Low breakaway friction
- Reduced extrusion
Applications
- Construction equipment
- Mobile lift
Material Datasheets
AS-568 AU Disogrin 9250
Disogrin 9250 is FST's proprietary compound used for fluid power seals and is unlike any polyurethane in the industry. It is more robust, wear-resistant, withstands higher pressure and lasts longer than any other formula on the market.
Performance
- Temperature Range (F) -65° to 230°
- Improved compression set
- Abrasion resistance
- Increased wear resistance
Applications
- Construction equipment
- Forklifts
Material Datasheets
GFS plans to add additional compounds to our e-comerce store in the near future. To find a Disogrin compound that isn't listed here, contact GFS today.