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Since 1917 Silca have employed Leather Washers to achieve high pressures in their pumps. The 731 for steel barrel pumps and the 741 for aluminium (post 2008) barrel pumps.
Since 1917 Silca have employed Leather Washers to achieve high pressures in their pumps. The 731 for steel barrel pumps and the 741 for aluminium (post 2008) barrel pumps.
Silca

Silca Leather Pump Washers

£14.00
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With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritised (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or despatch to you — it often never even hits the stock room shelves!

Pre-Launch

With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on Undetermined
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When you purchase this item, you will earn of rewards points to spend on your next purchase from us. You can spend your Rewards balance in-store & online.

Anxiety-free returns

Returns and exchanges

If you are not completely satisfied with your purchase, simply return the item or items to us in their original condition* within 30 days of receipt. You must notify us in writing within 14 working days of placing your order, by post or email of your intention to do this.

RETURN ADDRESS:

Returns Department
7hundred Ltd
68 Peascod Street
Windsor
SL4 1DE

We will issue a refund, credit or exchange the item for a different size / colour if preferred. Delivery charges are only refundable if you have canceled your entire order within the 7 day Cooling-Off Period or where the goods are faulty and a refund is made.

Store Credit is valid for 2 years and cannot be redeemed for cash at any point.

Where you require an exchange, for example, because a size has been incorrectly ordered, we will make a £4.95 charge or deduct the value from Reward Points where available, to cover re-delivery costs.
(Note: For larger items such as wheels, smart trainers, this charge may vary and you will be informed of the price before the item is sent).

Payment for this must be provided before we will send out the replacement item.

For European and International orders the charge will vary depending on the current cost of delivery to that country. For an accurate price, please contact us before returning your item.

Sorry, we cannot accept returns of books or software where any seals have been broken or working products that have been used.

Please note :

  • The item is your responsibility until it reaches us. For your own protection, we recommend that you send the parcel using a delivery service that insures you for the value of the goods.
  • The cost of returning the item to us is your responsibility.
  • The parcel can take up to 7 working days to be processed once received.

* Note: when trying on items of clothing, please ensure that you are not wearing perfume / aftershave or a deodorant which may leave a scent or marks on the item. In the case of cycling shorts please ensure that underwear is worn when first trying them on. The item(s) must be returned in its original packaging with all labels and tags and with all enclosed documentation.

We will be unable to accept the return of any item where there is evidence that these instructions have not been followed.

For large items such as bikes, trainers and associated large / bulky accessories and wheels, we reserve the right to charge a re-stocking fee of 5% to cover our administration costs.

Faulty Item

If the item you received is faulty, please contact us quoting your order number, your name and address, details of the product and the reason for return, and whether you require a refund or a replacement. We will then advise on how to proceed with the return. You have 30 days from receipt of the faulty item to notify us of your intent to return it and a further 30 days in which to do so.

Incorrect Item

If the item you received is not what you originally ordered, please contact us quoting your order number, your name and address, details of the product and the reason for return, and whether you require a refund or a replacement. We will then advise on how to proceed with the return.

All refunds will be given as soon as possible, and usually take the form of a refund transaction onto the card used for the original purchase. At the very latest we will refund your money within 28 days from the day we receive your returned item. In the case of incorrect ordering and undisclosed reasons for return, a credit or exchange may be issued and the customer will be expected to pay the return postage costs.

All returns must be accompanied by a completed returns form and a copy of the original invoice.



You can submit a returns form here:

Returns Form

Silca Leather Pump Washers

Brand:Silca

Code:SIAMPUGASCOM

Since 1917 all Silca pumps have used steam pressure-formed leather cup washers to achieve high pressures.  
 
The 731 is the classic 28mm diameter washer used on pumps produced between 1917 and 2008.
 
In 2008, Pista and SuperPista pumps moved from steel barrels with 28mm inner diameter, to aluminum barrels with 30mm diameter.  The 741 Leather Washer fits all 2008 and later pumps with 30mm inner diameter.  If you are in doubt, try a magnet on your pump barrel, if it sticks, buy the 731, if not, the 741 is for you.
 
Since the 1960's all SILCA leather washers have come from the same leather converting house in the fashion district of Milan, Italy.  For more than 5 decades the same supplier has cut these washers from the excess material left over from the production of exotic handbags, Italian luxury car interiors, and high-fashion luggage.  A small press is used to hand cut and then pressure form these washers from pieces of leather otherwise sent to the bin. 
 
From a purely functional standpoint, inexpensive o-rings are most commonly used in this application, but no o-ring can match the smooth feel and zero-stiction action of a leather gasket.  It is common today to find SILCA leather gasket pumps throughout the professional peloton (especially during the spring classics) as o-ring seal pumps struggle with heat and often are unable to seal once the pump barrel is hot from inflating more than a few wheels.  
  • €16.36
    EUR
  • $22.61
    AUD
  • $19.97
    CAD
  • $24.63
    NZD
  • $14.53
    USD
  • CHF13.19
    CHF
  • kr191.13
    SEK
  • kr2,048.77
    ISK
  • kr122.05
    DKK
  • kr160.28
    NOK
  • ¥2,243.64
    JPY
  • Prior to replacement of your new Leather Washer you should 'condition' the leather to ensure it is supple throughout the grain and to reduce friction, increase pump efficiency and avoid tearing the new gasket. Silca recommend their specially formulated NFS Pump & Leather Lube for this purpose and you can see how to condition your new washer in the video below.

    Technical Information

    731

    • Fits 28mm internal diameter Pista and Super Pista pumps (pre 2008)
    • Made from finest quality full grain leather
    • Produced by hand on the same equipment continuously since 1960
    • NEW! Updated from 2.25 to 2.50mm thick leather for improved durability
    • Hand crafted in Milan, Italy


    741

    • Fits 30mm internal diameter Pista and Super Pista pumps (2008 and later)
    • Made from finest quality full grain leather
    • Produced by hand on the same equipment continuously since 1960
    • NEW! Updated from 2.25 to 2.50mm thick leather for improved durability
    • Hand crafted in Milan, Italy

       

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  • I have a very old Australian bicycle pump (floor type). I need to replace the piston head. The barrel diameter is 36mm. Can you help me, please
    Question asked by Daniel on 16/11/2021 07:07:20
    Hi Daniel,

    I'm afraid we can't. The only leather washers we supply are the 28mm and 30mm for Silca pumps specifically.

    You might be able to source leather gaskets / washers locally but that is about as helpful as we can be from this distance without any onformation on the pump.

    Good luck!
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