Silca Floor Pump 17-4 Stainless Steel Presta Chuck

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Silca Floor Pump 17-4 Stainless Steel Presta Chuck

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Constructed with 17-4 Stainless Steel and designed to last many lifetimes the Silca Floor Pump Presta Chuck is more than 6 times stronger than brass and 4 times harder, resulting in parts that last longer and are nearly impossible to damage or wear out. Used in aerospace, petrochemical processing and military aircraft to name a few applications and employing mono-crystaline diamond tooling to get the perfect surface finish, this is truly a tool you will hand down to your children and they in turn onto theirs.
Included in your purchase is the newly improved SILCA #242 gasket utilising a high tech, fully synthetic Elastomer base material rather than the black carbon-filled natural rubber of previous gaskets. With a life expectancy of more than 5 times the carbon-filled rubber or Buna-N materials used previously this unique, bright-red gasket boasts two-stage seal geometry which enforces closure on both valve stem and at the base of valve core threads resulting in improved durability and an air-tight seal in even the harshest of environments. The Chuck slips onto the valve stem with a reassuring 'click', while unique internal geometry actually utilises line air-pressure to compress the gasket onto the valve stem: the higher you pump, the harder it grips the stem!
• Easy push-on, pull-off
• Seals ALL Presta valve types
• 17-4 Stainless steel material has 6X the strength and 2X the hardness of Brass
• Formerly known as the 30.0 Presta-Only Head
• Mono-Crystaline diamond tooling to get the perfect surface finish
• Iconic Silca Presta Head design in use by more pro team and shop mechanics than any other
• Includes fully Synthetic Elastomer 242 Presta Chuck Seal (gasket)
• 5X the durability of traditional rubber materials
• Two-Stage gasket sealing geometry optimised for all Presta valve stems
• Pressure amplifying dome geometry uses air-pressure to clamp valve stem
• Schrader valve thread on hose side threads into any Schrader compatible hose attachment
• Hand-Crafted in Indianapolis, USA
SKU# SI/005060
Package ID: Small_Package

Customer Reviews

The best Presta chuck in the market Review by Paul

After years of wasting time trying to get various pump heads and chucks to work, including the 2 types that came with my Lezyne floor drive, along comes this stunning update to the classic Silca chuck. I've now got it attached to the Lezyne floor drive, attached to the schrader valve head as this mates perfectly with the threaded end of the Silca chuck.

Over-engineered to be sure but built like a tank from stainless steel. The rubber gasket has been completely redesigned and works brilliantly on presta valves. Simply put, there is no other chuck out there that works as efficiently as this. I've tried it on threaded and unthreaded presta valves without problems.

It does take a little while for the gasket to wear in as in the beginning it can be a bit tight to get on and off. A neat trick for use in the beginning is to unscrew the top a little bit as this takes a bit of the squeeze out of the rubber gasket. You can tighten it up after a few months of use as the gasket wears.

I love the way it pops on and off. The lezyne pump head and other chucks were hit and miss - they either leaked or jammed the presta valve. Or worse, bent the valve when clamping down. Not so with the Silca.

How often can you say you looked forward to pumping the tires? Sure, it's not cheap - but it's the best by a country mile. I love mine.

(Posted on 22/05/2016)