Mechanical Seal Style PHB

The PH Cartridge Seals

These two single cartridge seals are engineered for the most demanding corrosive applications. By minimizing the number of troublesome “O” rings and eliminating any media exposure to the sleeves and glands, we have produced two very cost effective solutions to industries’ toughest applications.

Stationary Welded Metal Bellows Cartridge with Plain Gland

  • Stationary welded metal bellows design for better face alignment.
  • In highly corrosive conditions that require expensive upgrades to higher alloy metals like Duplex S.S., Alloy 20, Hastelloy C276, the PH seals are an ideal economical solution. Only the wetted parts need to be constructed of these alloys while the larger metal parts gland and sleeve can be 316 S.S. since they are located out of the product.
  • The only single cartridge seal in the industry with only one “O” ring. Cost savings are substantial when perfluoroelastomers are required.
  • Seal faces positioned near the lantern ring connection for enhanced cooling from product recirculation
  • Rotary seal ring is shrouded for protection
  • Short outboard length minimizes nearest obstruction problems
  • Hydraulically balanced design
  • No dynamic “O” rings
  • Easy cartridge installation
  • Even face loading
  • Patent pending Plunger-Lock drive
  • Available in inch and metric sizes.
Style PHS

Stationary Multiple Spring Cartridge with Plain Gland

  • Stationary multiple spring design for better face alignment.
  • In highly corrosive conditions that require expensive upgrades to higher alloy metals like Duplex S.S., Alloy 20, Hastelloy C276, the PH seals are an ideal economical solution. Only the wetted parts need to be constructed of these alloys while the larger metal parts gland and sleeve can be 316 S.S. since they are located out of the product
  • Only single cartridge pusher design with (2) o-rings. Cost savings are substantial when perfluorelastomers are required.
  • Seal faces positioned near lantern ring connection for enhanced cooling from product recirculation.
  • Rotary seal ring is shrouded for protection
  • Short outboard length minimizes nearest obstruction problems.
  • Heavy Duty anti-rotation tang
  • Hydraulically balanced design
  • Easy cartridge installation
  • Hastelloy C276 Springs are out of the product
  • Available in inch and metric sizes.

Operating Conditions

Max Temp - 400ºF (204ºC)
• Certain o-rings will lower temperature limitations.
• Consult Flex-A-Seal for higher temperature.

Max Pressure - 300 PSI (20 bar)

Max Speed - 6000 FPM (22 m/sec)

Note: Max. Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time. Contact Flex-A-Seal if in doubt.

Materials Available

Faces
Carbon, Nickel Bound Tungsten Carbide, Silicon Carbide

Elastomers
Viton®, Ethylene Propylene, Aflas®, Buna, Neoprene, Perfluorelastomers

PHB Welded Metal Bellows Standard Hastelloy C276, other options available: Inconel 718, Titanium, Monel.

PHS Stationary Seal Ring and Inner Flange Hastelloy C276 with other high alloys available, Hastelloy C276 spring standard.

Rotating Metal Parts (Wetted) – Hastelloy C276, other higher alloys available

Non-wetted metal parts – gland and sleeve 316 S.S.


Flex-A-Seal PH Cartridge Seal

 

 

 

 

 

 

 

 

Flex-A-Seal PH Cartridge Seal