Antarctic research station

When Norseal received an order from Booths Industries for a drop seal nearly 3 metres long, they checked to see if there was a mistake in the order. But it was correct: two Stadi LD-24/20 WS drop seals measuring 2896mm.

But where on earth could there be two doors this big? The answer is the South Pole, where contractor BAM Nuttall is building an Antarctic Research Station. The Norseal seals will provide acoustic protection for a double set of steel doors in the challenging polar conditions of Antarctica.

The Stadi LD-24/20 WS, engineered by Athmer, is a single-actuated bottom edge drop seal for metal door sets. Made from aluminium with a silicone gasket, it’s been tested to BS EN ISO 10140-2 for acoustic rating. As with this large seal, we can cut drop seals to any size on our drop seal cutting machine. However, they are available off-the-shelf in 750, 900, 1050, and 1200mm lengths as standard for next-day delivery. 

Some seals in the Stadi range can be fitted with an optional delayed-action feature that extends the closing time of the seal to approximately 6 to 8 seconds, making them suitable for airlock situations. When it's opened, the seal moves quickly up again so it doesn't scrape against the floor. This means that the seal can be fitted on doors where the floor is uneven and extends the maintenance-free, optimum performance of the door for many years.