SKU: 80531772408

Ultimate Tubeless Sealant (16oz)

Sale price$21.59 Regular price$23.99
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  • USA
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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1

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Description

Ultimate Tubeless Sealant (16oz)Injectable through your valve, seals a 6mm+ puncture, and lasts up to 6 months. The perfect sealant for those looking for the ultimate sealing power, longevity, and ease of use. The original sealant formulation, released 2. 5 years ago, was designed primarily for effective puncture sealing by maximizing the surface area of the liquid latex for enhanced performance. Pro racers valued its convenience, as they frequently changed tires based on race

Injectable through your valve, seals a 6mm+ puncture, and lasts up to 6 months. The perfect sealant for those looking for the ultimate sealing power, longevity, and ease of use.

The original sealant formulation, released 2.5 years ago, was designed primarily for effective puncture sealing by maximizing the surface area of the liquid latex for enhanced performance. Pro racers valued its convenience, as they frequently changed tires based on race conditions and could easily pour in fresh sealant without needing to inject it through the valve. However, we heard two main concerns from more casual cyclists—it dried out quickly when not in use, and its composition of the longer strand carbon fiber made injection difficult and problematic, leading to a potentially messy installation if not handled carefully. 

Please Note: Injectors are sold separately.

Lastly, the old Natural Latex formula needed a two-step process to stay liquid longer. That has been eliminated with our new blend of natural and synthetic latex. SILCA Ultimate Sealant Is a one-step process lasting +6 months and still, above all else, sealing punctures on race day.

SPECS:

  • Seals 6mm+ punctures
  • Injectable through the valve (Injector sold separately)
  • Lasts 6+ months
  • Proprietary Natural and Synthetic Latex blend
  • Optimized carbon fiber strands
  • Advanced Foaming agents to carry carbon strands to a puncture
  • Tested to seal punctures down to temperatures of -15C (5F)
  • Available in 1L, 500ml, and 65ml bottles
  • Ammonia Free
  • Not injectable in Reserve valves
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: 80531772408

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Katherine Shope
Lexington, US
★★★★★ 5
Thumbs up.
Color: White, Size: Medium
Looks great, fits well and comfortable.
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Reviewed in the United States on May 18, 2026
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Linda Swanson
Lake Worth, US
★★★★★ 4
Fine little tight around collar
Color: White, Size: X-Large
Little tight around collar
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Reviewed in the United States on April 20, 2026
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Reginald Carroll
Chelsea, US
★★★★★ 5
Great
Color: Light Blue, Size: XX-Large
Great dress shirt !!
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Reviewed in the United States on April 28, 2026
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Michael Kulp
Grantham, US
★★★★★ 5
Highly Recommended Dress Shirt
Fit Type: Regular Fit, Color: White, Size: Medium
Honestly, I Love It. Fits Great, Neck Isn't Too Tight Like Most Shirts, And It's Comfortable. It Is 100% Cotton, So Dont Forget To Iron It Before Wearing It. High Quality Dress Shirt. Highly Recommended.
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Reviewed in the United States on October 21, 2025
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Jim
Alexandria, US
★★★★★ 5
Surprisingly good shirt for the price
Fit Type: Regular Fit, Color: White, Size: XX-Large
I’m generally pleased with my purchase. I got a 2XL because the website it would fit my neck. Around the waist it fit similar to Amazon Essentials work shirts (like mechanics use which I find comfortable). It was snug around the waist when sitting, but I can’t complain because I have a belly. I did find the neck snug when buttoning the top button so it means the neck is 18 or 18.5 and I wear a 19/19.5 to have 1-2 fingers space in the collar. The shirt is surprisingly thick like Amazon’s work shirts, much thicker than other dress shirts from another brand. And I am pleased that this shirt has button holes like other Amazon shirts does, all vertical button holes except the last one at the bottom which is horizontal. That feature keeps the shirt from unbuttoning itself during daily movement at the office. A very nice feature! I was a little disappointed in how it was packaged however but I have to press and wash it anyway.
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Reviewed in the United States on February 24, 2023

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