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Silca 323 Elastomer Seal

  • £12.00
In Stock at Warehouse | Shipped in 3-5 days
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FINALLY!  The 'missing' SILCA gasket is back in production.  There are at least 3 original brass chucks that use this gasket as well as the Impero frame pump.  However, none of them were as widely sold as the Presta Only chuck and we had been unable to find original 323 gaskets that were unused and in near original condition to assess performance, so the team at SILCA had to completely redesign and optimize this part from scratch.

This modern 323 gasket has been developed using the same high-tech fully synthetic elastomer used on our modern 242 gasket on the SuperPista ultimate.  We find that this material allows for greater valve holding power, greater sealing and significantly improved life expectancy.  New 2-stage Seal Design improves high pressure performance and also makes it unnecessary to press the chuck on as far as the original design required.   With a 323 gasket your classic SILCA pump will literally perform BETTER than new!

This is the gasket you need if you have any of the chucks shown in the images, they all share the feature of being reversible so that you can take out the gasket and other inside pieces and flip them over to convert the chuck from presta to Schrader.  We know of the 3 models shown in the photos, but amongst these there are at least 6 variants of the plastic pieces that go inside the chucks.  We are not able to remake any of the plastic pieces from inside these chucks.  If your plastic pieces are broken you can still use this gasket to keep your chuck presta compatible but Schrader will not be an option. 

If you need Schrader compatibility we recommend the Thread-On Schrader Chuck with 17-4 Presta Chuck as a solution.  This isn't the least expensive option, but both chucks are all metal and will last an eternity.  

Known compatibility  

Art.24.4, Art.84 & Art.323

SILCA Impero frame pump heads

Replaces 323.1


UK Deliveries
FREE when you spend over £50.00 in a single order
Otherwise it's typically £3.99 per order
Delivery should be expected between 2-3 working days unless stated on product page.

Worldwide Deliveries*
Approximately 4-10 working days depending on country
via Parcelforce Signed Delivery (fully traceable service). Please add items to the basket to calculate delivery for desired country.

If your country isn't listed for delivery at checkout please contact us.

Delivery of Bikes
We ship all our bikes free of charge within the United Kingdom (excl. Jersey and the Channel Islands at this time) and all our bikes come pre-assembled with just a few tweaks required (Please see our Bike Build Instruction page for details of assembly required).

All our bikes undergo a safety check before being re-boxed for shipping which can during busy periods take a little longer to complete so whilst we aim to ship all our bikes within two working days of the order please allow for additional time for this process.

Signature Required
All our consignments irrespective of the carrier require a signature upon delivery, deliveries are typically made between 08:00 and 18:00 so please bare this in mind when choosing a delivery address.

Package Recycling
We do try when possible to reuse packaging from our own suppliers in order to send purchased items to our customers, we ask if the packaging is still in good condition after you've received your goods then please try to use it again or recycle if not possible.