VMC Item number: VMC003990R
VMC

Advantages of Viton O-ring cylinder head VMC

Viton O-ring gasket for the cylinder head (head gasket as O-ring)
Suitable for VMC Explorer and VMC Ranger cylinders
Ensures a clean seal between cylinder head and cylinder
Viton (FKM): temperature-resistant and permanently dimensionally stable under thermal stress
Ideal as a service part during assembly, overhaul or after disassembly of the cylinder head
Base vehicles: Vespa PX200, Rally200, Cosa200 (for VMC Explorer/Ranger conversion)
5,90 €*
available immediately
Shipping weight 0,01 kg

Viton O-ring cylinder head gasket - VMC Explorer and VMC Ranger (PX200, Rally200, Cosa200)

This Viton (FKM) O-ring is intended as a head gasket for the VMC cylinder family and provides a seal between the cylinder head and cylinder. Suitable for VMC Explorer and VMC Ranger - an important service item for initial installation, after dismantling the head or if the head gasket no longer seals reliably.

High temperatures, changing thermal loads and mechanical preload from the stud bolts come together on the cylinder head in particular. A crushed or aged O-ring can then lead to leaks. Viton is the sensible choice here, as the material is temperature-resistant and retains its shape even under frequent stress - ideal for standard setups as well as for more powerful engines suitable for everyday use.

Viton (FKM) Cylinder head ↔ Cylinder VMC Explorer VMC Ranger PX200 / Rally200 / Cosa200

Why Viton as a head O-ring?

Temperature reserves: suitable for the zone on the cylinder head subject to high thermal loads.
Dimensional stability: remains reliably in shape even with frequent thermal cycles and preload.
Clean seal: ensures a defined sealing fit between head and cylinder.

Assembly instructions

Clean sealing surfaces: Head and cylinder must be clean, free of grease and without damage to the groove.
Insert O-ring correctly: do not twist, do not pinch - position cleanly in the groove.
Tighten crosswise: Tighten stud bolts/nuts in stages and crosswise, then check after the first warm-up.

Technical details

  • Product: O-ring seal cylinder head
  • Material: Viton (FKM)
  • Application: Sealing between cylinder head and cylinder
  • Cylinder compatibility: VMC Explorer, VMC Ranger

Suitable vehicle models (base vehicles)

Manufacturer / Model cc engine type Engine type Year of construction Add-on
VESPA PX200 E / P200E200VSX1T2Tfor conversion to VMC Explorer/Ranger
VESPA 200 Rally200VSE1T2Tfor conversion to VMC Explorer/Ranger
VESPA COSA 200200VSR1T2Tfor conversion to VMC Explorer/Ranger

Note: The fit refers to the VMC cylinders (Explorer/Ranger). The cylinder installed is decisive, not the original series configuration of the engine.

Conclusion

The Viton O-ring as a cylinder head gasket is a small but important service part for VMC Explorer and VMC Ranger. A clean seal between the head and cylinder - ideal for durable, everyday setups based on the PX200, Rally200 and Cosa200.

OEM numbers (for comparison purposes only)
VMC:
003990
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