Encapsulated O-rings
Encapsulated O-rings (also known as encased O-rings) are a special type of classic O-ring. They consist of an elastic core made of FPM (Viton) or MVQ (Silicone) and an outer shell (encapsulation) made of FEP or PFA. They are used wherever high chemical and temperature resistance is required and standard elastomer O-rings cannot be used.
They combine the advantages and best properties of both materials used
Core material – FPM / MVQ – flexibility
Provides flexibility. The materials used are FPM (Viton) and MVQ (Silicone).
Encapsulation material – FEP / PFA – chemical resistance
Seamless FEP / PFA layer encapsulation provides excellent chemical resistance and low friction.
This unique combination of properties from both materials creates a highly effective, long-lasting solution for the most demanding applications.
The outer FEP Teflon jacket is typically used for applications in the temperature range of -60°C to +205°C (depending on the core material used).
For applications with higher temperature requirements, PFA Teflon outer coating is used. This variant can be used up to temperatures of +260°C.
Additionally, PFA offers greater mechanical durability than FEP and has excellent resistance to breakage and stress.
Encapsulated O-rings are primarily designed for static applications but can also be used for slow linear or rotary movements. They are mainly used in chemical, food processing, pharmaceutical, and engineering industries.
Encapsulated O-rings have FDA certification and can therefore be used in food processing and other areas where this certification is required.
They are manufactured according to ISO 3302-1 tolerances. The size range is available in both metric and inch dimensions.
In case of non-standard size requirements, we can custom manufacture the encapsulated O-ring according to your specifications. Delivery is possible from just one piece. We offer quantity discounts for larger orders.
In addition to classic circular profile rings, we also supply rings with hollow cores and those with square and rectangular cross-sections
