O-ring 10×2.5mm for Oil Catch Can Dipstick

O-ring 10×2.5mm — Nuke Performance Oil Catch Can Dipstick Seal

The O-ring 10×2.5mm (SKU 265-10-208) is the small sealing ring fitted at the dipstick port of compatible Nuke Performance oil catch cans. This O-ring prevents oil vapour or crankcase gases from escaping around the dipstick stem when it is inserted, maintaining system integrity and preventing unmetered gas flow past the sealing point.

The Importance of the Dipstick Port Seal

The dipstick access port creates a potential leak path in the catch can housing if the O-ring seal is not maintained in good condition. In a closed crankcase ventilation system, any unsealed opening disrupts the calibrated system balance and allows unfiltered crankcase gases to escape. Even in an open system, leaking oil vapour around the dipstick creates an unnecessary mess and may trigger unwanted smells or oil deposits in the engine bay.

Key Features

• 10 x 2.5mm dimensions — precise fit for the catch can dipstick port
• Oil and vapour resistant elastomer for long service life
• Seals the dipstick stem against the catch can housing
• Small but important component — replace whenever the dipstick is removed for service
• Genuine Nuke Performance replacement component

Service Note

This O-ring should be replaced any time the dipstick is serviced or if any oil seepage is observed around the dipstick port. It is an inexpensive component that is easily overlooked but important for a clean, correctly sealed installation. Available from Arctic Performance Parts for Nuke Performance catch can owners in Norway, Sweden, and Denmark.