
Small Dome Gasket X9071
$3.12
The Small Dome Gasket (part# X9071) is a genuine Tacony OEM replacement part from the recovery and solution tank assembly of the Tornado Marathon SE 900 self-contained carpet extractor. It is the sealing gasket for the small recovery dome.
What the Small Dome Gasket does
The Small Dome Gasket is the compressible seal between the small dome and the recovery tank. It is the part actually doing the sealing — the dome merely provides the clamping surface. Because it is compressed and released every time the tank is opened, it wears faster than the fixed seals elsewhere in the tank.
When to replace the Small Dome Gasket (X9071)
Replace it when it has flattened, hardened, split, or holds a permanent groove where the dome sits. A quick test: with the machine running, press the dome down by hand; if suction at the wand noticeably improves, the gasket is no longer sealing under its normal clamp load.
Small Dome Gasket X9071 — fitment and installation notes
Seat it fully in its groove before closing the dome — a gasket pinched half in and half out seals worse than the old one it replaced. Wipe the groove clean of grit first. Tacony builds the Tornado Marathon SE 900 and the Powr-Flite Prowler PFX900S on a single machine platform, so this component carries across both brands rather than belonging to either one. It is a shared Tacony component and may fit additional models beyond those listed — call us and we will confirm against your serial number.
Compatible Models for the Small Dome Gasket
- Tornado Marathon SE 900 — Model 98170
- Powr-Flite Prowler PFX900S
- Powr-Flite PFX900SG
Twin City Vacuum has been selling and servicing commercial floor-care equipment since 1956 from 5415 West Broadway, Crystal, MN 55428. We stock genuine Tacony parts and ship nationwide. Browse the full Tornado 98170 parts catalogue, or see the manufacturer at tornadovac.com.
Frequently Asked Questions
What does the Small Dome Gasket do on the Tornado Marathon SE 900?
The Small Dome Gasket is the compressible seal between the small dome and the recovery tank. It is the part actually doing the sealing — the dome merely provides the clamping surface. Because it is compressed and released every time the tank is opened, it wears faster than the fixed seals elsewhere in the tank.
How do I know if my Small Dome Gasket needs replacing?
Replace it when it has flattened, hardened, split, or holds a permanent groove where the dome sits. A quick test: with the machine running, press the dome down by hand; if suction at the wand noticeably improves, the gasket is no longer sealing under its normal clamp load.
What models is the Small Dome Gasket (part# X9071) compatible with?
The Tornado Marathon SE 900 (Model 98170), the Powr-Flite Prowler PFX900S and the PFX900SG. It is a shared Tacony part and may fit further models; call us to confirm.
How do I order the Small Dome Gasket (part# X9071) or get help?
You can add the Small Dome Gasket (part# X9071) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing Tornado equipment since 1956 and can help confirm the right part for your machine.




