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Q 1. What are Air-Seal Marker Valve Caps used for?

A. Green Marker Caps replace the standard valve dust cap to visually indicate that a tyre has been treated with Air-Seal sealant.

Q 2. How many caps are in GMC50?

A. 50 caps per bag.

Q 3. What is the difference between GMC50 (caps) and GMR50 (rings)?

A. GMC50 caps replace the valve dust cap for a prominent visual marker. GMR50 rings slide down the valve stem for a more discreet indicator.

Q 4. Do the Marker Caps fit standard valve stems?

A. Yes – designed for standard air valve stems on commercial and agricultural vehicles.

Q 5. Can Marker Caps be used with any Air-Seal sealant?

A. Yes – compatible across all Air-Seal sealant formats.

Q 6. Are the Marker Caps weatherproof?

A. Designed for outdoor vehicle use under normal fleet operating conditions.

Q 7. Are Marker Caps reusable?

A. They are intended as a permanent treatment indicator. Replace with a standard cap if the tyre is later serviced.

Q 8. Are Marker Valve Caps included in the IPK01 Kit?

A. No – the IPK01 kit includes green Marker Rings (GMR50 type). GMC50 caps are sold separately.

Q 9. Where can I buy Air-Seal Marker Valve Caps?

A. Available at PartsForMachines in bags of 50, with UK mainland delivery in 2–4 working days.

Q 10. What is the returns policy?

A. PartsForMachines offers a 30-day returns policy for items that are unopened and unused.

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