Silca Elastomer Seals in Red

The Iconic SILCA 24.1 seal has been updated and improved after more than 30 years in the market. The new 242 seal utilizes a high tech and very red, fully synthetic elastomer base material rather than a carbon black filled natural rubber of previous seals. This unique bright red seal borrows from industries which require air-tight seals in the harshest of environments, and tests to a life expectancy of more than 5X the carbon filled rubber or Buna-N materials used previously. New Two-Stage seal geometry seals on both valve stem and at the base of valve core threads resulting in a more positive seal and improved durability. The new seal slips onto the valve stem with a satisfying 'click', while unique internal geometry actually utilizes line air pressure to compress the seal onto the valve stem: the higher you pump, the harder it grips the stem!

This design is so iconic we've found more than 20 companies worldwide making pump heads and gaskets copied from this, but none of them can come close to the precision and technology in our new seal

All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £25 delivery fee.

Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.

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