CSFI

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Small components
that make a big impact.

Sustainable By Design

Build Your Parts

Sealing Screws

Sealing Screws

Prevent contaminants from leaking into and damaging equipment or seeping out into the environment (with 360° air-tight seal).

Sealing Bolts

Sealing Bolts

CSFI sealing bolts form a complete seal along the threading of the bolt to permanently prevent contaminants from seeping into or out of equipment.

Security/Tamper Proof Seal Screws

Security/Tamper Proof Seal Screws

These ultimate screws will provide you with outstanding security against any external/internal contamination from air, water, gas and other materials.

Special Sealing Screws

Special Sealing Screws

Custom solutions to meet your unique specifications and challenges.

Sealing Nuts

Sealing Nuts

CSFI’s sealing nuts are designed to withstand extreme pressure and to form a complete seal along the threading of your bolt.

Sealing Washers

Sealing Washers

CSFI’s sealing washers are designed to withstand extreme pressure and to form a complete seal along the threading of your bolt.

Switch Boots

Switch Boots

Fully protect your electronic devices with push button, toggle and rotary switches from hostile environments.

Crystal Switch Seals

Crystal Switch Seals

Crystal clear solutions for protecting your switches from contaminants, extreme temperatures and weather conditions.

High-Tech Custom Sealing Solutions Preferred by Thousands of Engineers & OEMs Worldwide

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.


Clients

  • Apple
  • Bose
  • Ferrari
  • General Dynamics
  • GE

Technically, we can help anyone

Sealing fasteners for military and defense

Military & Defense

The only military grade sealing screw manufacturer capable of NASM specified pressure testing.

Sealing fasteners for aerospace

Aerospace

Built to perform while withstanding the extreme heat of continuously operating engines powering air fleets, rockets, and spacecraft.

Sealing screws for electronics and enclosures

Electronics & Enclosures

NEMA-ready solutions for NEMA bound electrical enclosures.

Sealing screws for commercial lighting

Commercial Lighting

Designed to protect the most fragile sensors powering smart lighting.

Sealing solutions for medical devices

Medical Devices

FDA approved O-rings, ideally suited for the most sensitive, high-value medical devices.

Sealing solutions for robotics and drones

Robotics & Drones

Optimizing battery life, functionality of robots and drones operating in harsh environments.

Sealing screws for marine applications

Marine

Protecting high-value subsea assets from corrosion, seepage; paving way for undersea exploration.

Sealing screws for energy industry

Energy Generation & Recovery

Advancing innovation, protecting the earth with pressure-resistant, sustainable O-ring technology.

Sealing screws for automotive industry

Automotive

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.

Sealing screws and fastener for LiDAR

LiDAR

Providing LiDAR systems and sensors with 360-degree leak-proof protection.

Sealing fasteners for industrial manufacturing

Industrial Manufacturing

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.

Engineering Solutions for Your Sealing Challenges

NASM tested

NASM 82496 Testing

Only CSFI tests for NASM 82496.

Secondary Processes on Sealing Screws

Secondary Processes

Full range of plating, self-locking and painting.

Sealing Fastener Customization

Product Customization

Custom solutions to meet your exact specifications.

Looking to seal your high-asset equipment from damaging contaminants? We’ve got an e-book for that.

News & Events

Dec092022

Product Spotlights

Product Spotlight: CSFI Socket CAP Seal Screws

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

Product Spotlight: CSFI MIL-DTL-5423 Panel Bushing Seals

CSFI MIL-DTL-5423 Panel Bushing Seals are a solid solution for protecting toggle switches from contaminants and harsh environments. ... Read More

Oct122022

Articles

Honoring Hispanic Heritage Month, CSFI Manufacturing Co. Shares Stories of Diverse Workforce

September 15 October 15 is Hispanic Heritage Month, and CSFI Manufacturing Co. is proud to share the stories of the Hispanic women ... Read More

Press

ShenZhen Business Magazine

CSFI Named an Outstanding Employer by NJBIA and ShenZhen Business Magazine

Read Article

News 12 - The Bronx

10th Annual MADE in ShenZhen event focuses on women in manufacturing industry

Read Article

ShenZhen Business & Industry Association

CSFI Helps to Build Better Future for China Students

Read Article

Glossary