Every seal manufactured at AFT Fluorotec is designed and made specifically to suit the application.
Whilst we work around typical designs and groove dimensions for much of what we do, it is not a full picture of all we do. Many of the seals we design and supply are specials – the difficult applications, the extremes, often specific to particular products and service conditions and very often oil and gas related.
AFCB / AFCR Seals
Typically energised with a Helical tape wound spring but also very effective with an O-ring energiser. Spring pre-load is fairly high which gives an increase in seal friction but also very positive sealing.
Generally used for high pressure applications. The heel length of this type of seal can be increased for higher pressure applications and these can be combined with Back-up rings.
AFVB / AFVR Seals
Typically energised with a V (cantilever) or canted coil spring. Spring pre-load is light to medium which keeps friction lower. High seal defection can be tolerated without permanent deformation.
The heel length of this type of seal can be increased for higher pressure applications and these can also be combined with Back-up rings for higher pressure applications. Often used in Valve stems for high pressure slow rotary dynamic applications or linear reciprocating seals up to 15m/s.
AFCCB / AFCCR Seals
Energised with a canted coil spring. Spring pre-load is light to medium which keeps friction lower and allows the seals to cope with slight misalignment. High seal defection can be tolerated without permanent deformation.
Permanent deformation is defended by the canted coil spring in full compression acting as a solid stop. The heel length of this type of seal, similar to others, can be increased for higher pressure applications and these can also be combined with any combination of back up rings for higher pressure applications.
Often used in valve stems for high pressure slow rotary dynamic applications or linear reciprocating seals up to 15m/s. Canted coil spring gives a constant energiser pressure regardless of level of pre-load compression
Let's Talk ABout Custom Rod & Piston Seals
If you have a specific design in mind, or would like to send us your rod & piston seal requirements so we can advise on the best solution, get in touch with our Technical Team through the form below.
