Mecnanical Seal Type First 4 Sme, Customized Chemical Pump Mechanical Seals

Product Description

Product DescriptionQT SME external balanced seals
An external mechanical seal with non-metallic components in contact with the media being sealed therefore able to operate in corrosive and chemical applications. Suitable for use with a number of stationary face arrangements.
External clamping
Easily set to the correct working length, enabling pump efficiency
adjustments to be made without dismantling the pump.
Visual examination
Visible spring gap allows monitoring of face wear.
Positive drive lugs
Drive forces are evenly distributed around the rotary face to reduce stress.
Non-metallic wetted parts
No metal parts in contact with pumped media, therefore able to
operate in corrosive applications.
Balanced
Hydraulic balance is achieved within the seal design and does not require a stepped shaft. Face loading is reduced to give cooler running and longer seal life.
Anti-clog
The dynamic O-ring moves onto a clean area as seal faces wear. Components remain free for longer seal life.
Secured rotary face
Shrink fitting improves durability and face retention under extreme operating conditions.
Metal parts:316 Stainless Steel as standard, other materials also availab
O-rings:vit® (Flurocarbon) or Ethylene Propylene (EPR) as
standard. Aflas®, Kalrez® and other elastomers available to order
Rotary face:Carbon, Silicon Carbide or Tungsten Carbide as standard. Antimony Carbon available on request.
Temperature:-30oC to 260oC (-22oF to 500oF) dependent upon
specified elastomer and sy711mmstem configuration
Pressure limits: HG Vacuum to 30 Bar(-28" HG - 440 PSI)

External clamping	Easily set to the correct working length, enabling pump efficiency adjustments to be made without dismantling the pump.
Positive drive lugs	Drive forces are evenly distributed around the rotary face to reduce stress.
Springs out of fluid	The Alloy 276 springs are not in the pumped fluid where they could corrode or clog, so remain effective for the whole of the seal life.
Balanced	Hydraulic balance is achieved within the seal design and does not require a stepped shaft. Face loading is reduced to give cooler running and longer seal life.
Visual examination	Visible spring gap allows monitoring of face wear.
Anti clog	The dynamic o-ring moves onto a clean area as seal faces wear. Components remain free for longer seal life.
Secured rotary face	Shrink fitting improves durability and face retention under extreme operating conditions
Non metallic wetted parts	No metal parts in contact with pumped media, therefore able to operate in corrosive applications.