Tuthill 20222700 Gear Case Gasket for HD Series Rotary Lobe Pumps
The Tuthill 20222700 is a genuine gear case gasket for Tuthill HD Series rotary lobe process pumps. A gasket on a gear pump is not just a joint seal. The gasket stack is what holds the rotor end clearance, so the thickness fitted changes how the pump performs. That is why these gaskets are published in graduated thicknesses rather than as a single part.
The gear case on an HD Series pump is an oil bath, and this gasket is the joint between the case and its cover. It is the one to keep with the spares any time the timing gears are being inspected or the gears are being retimed, because the cover cannot come off without destroying the gasket. Before the cover comes off, mark it against the housing so it goes back in the same orientation. Then clean both faces properly, because a scrap of old gasket left behind changes the clearance just as surely as the wrong part would.
Key Features
- Genuine Tuthill gear case gasket
- Direct replacement for HD Series builds
- Factory specification material and cut
- One per joint
- Single use item that is replaced every time the joint is opened
- Cheap insurance against a leak or a lost pump cover
Applications
- Lubrication circuits on compressors, gearboxes and engines
- Burner oil and fuel oil transfer and circulation
- Low pressure hydraulic supply circuits
- Heat transfer oil and quench oil service
- Scheduled overhaul of Tuthill rotary gear pumps
- Spares holding for equipment that cannot afford downtime
Specifications
- Brand: Tuthill
- Manufacturer Part Number: 20222700
- Part Type: Gear Case Gasket
- Fits: Tuthill HD Series rotary lobe process pumps
- Quantity Required: 1
- Condition: New
Frequently Asked Questions
Q: Can I stack two gaskets to make up a thickness?
Only if the parts list says so. Stacking gaskets that were not designed for it leaves a joint that relaxes and weeps.
Q: What happens if it is too thin?
The rotor will touch the cover as the pump warms and the parts grow. That shows up as noise, heat and, if it is left, scoring on the cover face.
Q: Should I mark the cover before removing it?
Yes. The service instructions call for it. A cover refitted a quarter turn out can change how the pump sits against its piping and its mount.
Q: Can I cut my own gasket from sheet?
It is a false economy. Thickness tolerance is what sets the clearance, and hand cut sheet is rarely within the few thousandths of an inch that matters here.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct gear case gasket.
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