DLSEALS Silicone gasket silicone O-ring

NBR(nitrile butadiene rubber)

 FKM, (Fluorocarbon)

*Service Temperature
For general type FKM  the service temperature is better limited to approximately from -26 C  to 232 C  in static applications, though the service temperature can arrive to 275 C at short time  In dynamic applications, it is suitable between -15 C and 200 C. 

*Application
Because FKM has excellent resistance of high temperature, oil, solvent, flame, chemicals and weathering, it is usually applied in automotive, chemical processing, aerospace and many other industries.

Silicone Rubber (Q, MQ, VMQ, PVMQ)

*Service Temperature
For Silicones the service temperatures are from -60 C to 225 C. Some special types can be used in extreme temperature up to 300 C and down to -100 C.

*Application
Silicone rubber performs well under environmental and temperature extremes. It is usually applied in automotive and aerospace industries where flexibility and longevity are important. It is also a suitable material for for food handling equipment and appliances.

PU (Polyurethane)

PU displays higher mechanical strength, high abrasion, wear and extrusion resistance, high pressure load capacity, as well as a high tear and elongation at break resistance. 

PU is suitablefor for application in mineral oils and greases, hydraulic oils, silicone oils and greases, highly non-flammable hydraulic fluids HFA and HFB and water uo to 50℃. 

PTFE O-Rings

*Service Temperature

PTFE's mechanical properties are low compared to other plastics, but its properties remain at a useful level over a wide temperature range of -100°F to +400°F (-73°C to 204°C).

*Application

PTFE is the common sealing material used for making wear ring, backing-up ring, o ring, gasket, etc. It can be found in metallurgy machinery, petrochemical machinery, engineering machinery, and light industrial machinery. 

Ethylene Propylene Rubber (EPM, EPDM)

*Service Temperature
For EPDM the service temperature can be designed from -55 C to 125 C or up to 150 C (for peroxide cured systems).
*Application
In phosphate-ester based hydraulic fluids and glycol based brake fluids systems Ethylene Propylene Rubber is good choice for sealing parts. EPDM is also is usually used in hot water or steam applications up to 150 C.