Key Differences:

  • Pressure: Outboard seals handle higher pressures.
  • Fluid Exposure: Inboard seals exposed to pump fluid, outboard seals exposed to atmosphere.
  • Temperature: Inboard seals may be exposed to higher temperatures.
  • Lubrication: Outboard seals often require external lubrication.

Selection Considerations:

  • Fluid Type: Compatible with pump fluid.
  • Temperature Range: Suitable for operating temperatures.
  • Pressure Range: Matches pump pressure conditions.
  • Shaft Speed: Compatible with shaft speed.
  • Material: Resistant to corrosion and abrasion.

PUMP OIL SEAL FOR INBOARD & OUT BOARD

Oil seals for inboard and outboard applications in pumps are designed to prevent fluid leakage and maintain efficiency. Here's a detailed overview:

Inboard Oil Seal:

  • Location: Inside the pump, near the bearings.
  • Function: Seals the shaft and prevents fluid from entering the bearing housing.
  • Types: Single or double lip seals, metal-cased or rubber lip seals.
  • Material: Viton, PTFE, or rubber.
  • Pressure: Lower pressure compared to outboard seals.

Outboard Oil Seal:

  • Location: Outside the pump, near the stuffing box or gland.
  • Function: Seals the shaft and prevents fluid from leaking out.
  • Types: Single or double lip seals, metal-cased or rubber lip seals.
  • Material: Viton, PTFE, or rubber.
  • Pressure: Higher pressure compared to inboard seals.

Installation and Maintenance:

  • Proper Fit: Ensure correct size and fit
  • Cleanliness: Clean shaft and housing before installation
  • Lubrication: Apply lubricant to seal and shaft (outboard seals)
  • Tightening: Secure seal securely, avoiding overtightening
  • Regular Inspection: Check for wear and damage