SKU: 8204866737

Silca 731 & 741 Leather Washer

Sale price$9.90 Regular price$11.00
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Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

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Description

Silca 731 & 741 Leather WasherSince 1917 all Silca pumps have used steam pressure formed leather cup washers to achieve high pressures. The 731 (formally 73. 1) 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 aluminium barrels with 30mm diameter. The 741 (formally 74. 1) Leather Washer fits all 2008 and later pumps with 30mm inner diameter. Since the 1960's

Since 1917 all Silca pumps have used steam pressure-formed leather cup washers to achieve high pressures. The 731 (formally 73.1) 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 aluminium barrels with 30mm diameter. The 741 (formally 74.1) Leather Washer fits all 2008 and later pumps with 30mm inner diameter.

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 cars 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 trash. Silca receives these parts by the hundred and it is always fun to sift through them looking at the various finishes and textures while thinking about the exotic sports car interior, $2000 briefcase, or handcrafted luggage sets from which they share history.

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.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 8204866737

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4.4 ★★★★★
Based on 28 reviews
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Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
customer
Style: Zinnia Dahlia
This package had more than the pkg that was supposed to have 4000, but they are coming up slowly. It is dry here, I have been watering , just enough to get the ground wet and they are scattered, but some are coming up. I also watered the space supposedly where i spread seeds from the supposedly 4000 seeds pkg. They are not coming up as much!
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
Justin Pone
Alexandria, US
★★★★★ 5
3 days and already sprouting
Style: Zinnia Dahlia, Style: Zinnia Dahlia
I planted these seeds three days ago. They’ve had pure sun these last three days with water that I’ve given them and they’re already starting to sprout. I could not recommend these more if I tried.
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Reviewed in the United States on June 6, 2026
J
Verified Purchase
josh
Chelsea, US
★★★★★ 4
Didn’t get a review on the garlic powder
Style: Zinnia Dahlia
The seeds were okay but the garlic powder that I ordered was smaller than usual is a case of bait and switch
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Reviewed in the United States on May 31, 2026
J
Verified Purchase
Jamie
Pawtucket, US
★★★★★ 5
Beautiful and vibrant blooms
Style: Zinnia Dahlia, Style: Zinnia Dahlia
This is the first time we planted Zinnias in our garden. Seemed so easy and worry free. It took 2.5 months from the time we planted the seeds to seeing the first blooms. It's now been about 3 months and the plants are in full bloom. The flowers came out in many vibrant colors! The seed packets contained a nice surprise since you don't know exactly what colors the flowers will be. Looks like it will continue blooming for a few more months with a little caring, like constant watering and deadheading. We definitely plan to capture the seeds so we can enjoy the flowers again.
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Reviewed in the United States on May 31, 2026
D
Verified Purchase
Dawn Abbott
Boise, US
★★★★★ 5
My favorite flower to grow!
Style: Zinnia Dahlia
I love my zinnia flowers!!! I had nearly 100% of these seeds sprout right up!!! (I plant a lot of seeds, and that's not very common)! I can't wait for these beauties to grow, so far they're looking healthy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026

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