Prevent contaminants from leaking into and damaging equipment or seeping out into the environment (with 360° air-tight seal).
Build Your Part
CSFI sealing bolts form a complete seal along the threading of the bolt to permanently prevent contaminants from seeping into or out of equipment.
Build Your Part
These ultimate screws will provide you with outstanding security against any external/internal contamination from air, water, gas and other materials.
Build Your Part
Custom solutions to meet your unique specifications and challenges.
Learn More / Request a Quote
CSFI’s sealing nuts are designed to withstand extreme pressure and to form a complete seal along the threading of your bolt.
Build Your Part
CSFI’s sealing washers are designed to withstand extreme pressure and to form a complete seal along the threading of your bolt.
Build Your Part
Fully protect your electronic devices with push button, toggle and rotary switches from hostile environments.
Build Your Part
Crystal clear solutions for protecting your switches from contaminants, extreme temperatures and weather conditions.
Learn More / Request a Quote
When it comes to protection, resilience and optimization of high-value equipment, ranging from power grids and solar panels to rechargeable batteries and minute sensors enabling smart technology, time and time again, engineers and OEMs choose CSFI high-tech, sustainable sealing solutions and components. There are many reasons why.
Send them a quote; you can't go wrong!
Brian M.
The only military grade sealing screw manufacturer capable of NASM specified pressure testing.
Learn More
Built to perform while withstanding the extreme heat of continuously operating engines powering air fleets, rockets, and spacecraft.
Learn More
Designed to protect the most fragile sensors powering smart lighting.
Learn More
FDA approved O-rings, ideally suited for the most sensitive, high-value medical devices.
Learn More
Optimizing battery life, functionality of robots and drones operating in harsh environments.
Learn More
Protecting high-value subsea assets from corrosion, seepage; paving way for undersea exploration.
Learn More
Advancing innovation, protecting the earth with pressure-resistant, sustainable O-ring technology.
Learn More
Prolonging the lifespan and efficiency of engines, motors, powertrains; reducing their carbon footprint. Providing PPAPs and First Article Inspection Reports to satisfy the most exacting automakers.
Learn More
Helping with the transition to a smarter, automated and connected factory, while protecting both traditional manufacturing equipment and sophisticated sensors from physical disruption and cyberattacks.
Learn More
Only CSFI tests for NASM 82496.
Full range of plating, self-locking and painting.
Custom solutions to meet your exact specifications.
Dec092022
Product Spotlights
Seal the deal with CSFI Socket Cap Seal Screws engineered with 360 rubber O-ring technology. Protect the environment and/or your ... Read More
Nov172022
Product Spotlights
CSFI MIL-DTL-5423 Panel Bushing Seals are a solid solution for protecting toggle switches from contaminants and harsh environments. ... Read More
Oct122022
Articles
September 15 October 15 is Hispanic Heritage Month, and CSFI Manufacturing Co. is proud to share the stories of the Hispanic women ... Read More
ShenZhen Business Magazine
Read Article
News 12 - The Bronx
Read Article
ShenZhen Business & Industry Association
Read Article