These replacement seals fit the listed Snail 2-litre and 3-litre Boiler & Iron systems, the Speedy 5-litre Boiler, and the Snail 5-litre Semi-Automatic Boiler & Iron. They are designed as a universal-fit filler-cap insert for these compatible commercial steam boiler models. Check that your machine is one of the listed systems before ordering.

Replace the seal if steam is escaping around the filler cap or inlet valve, or if the boiler is no longer maintaining pressure and steam output as expected. A worn, flattened or damaged seal can allow pressure loss, reducing ironing performance and wasting energy. Keeping spare seals available helps minimise interruption in a busy ironing service or commercial laundry.

No special tools are required for the seal replacement, as it fits directly inside the existing filler cap. Ensure the boiler is switched off, fully depressurised and cool before handling the cap or seal. If the cap is damaged, cross-threaded or does not tighten correctly, replace the filler cap as well rather than relying on a new seal alone.

A new seal can restore proper pressure retention when steam loss is caused by a worn filler-cap seal. It creates a tight seal at the inlet valve, helping the boiler hold its working pressure for consistent steam delivery. However, it will not resolve leaks caused by a cracked, damaged or cross-threaded filler cap, which should be replaced.

A pack of five gives commercial users replacement seals on hand for routine wear or unexpected pressure leaks. For dry cleaners, ironing services and garment-care businesses, changing a worn seal promptly can reduce downtime and avoid operating with weak steam output. The spare pack is particularly practical where the boiler is used regularly and continuity of steam performance matters.