CDI-Hallite Aerospace, a Michelin Group company
A Michelin Group Company

One partner for the complete sealing solution.

CDI-Hallite Aerospace is a collaboration between CDI and Hallite, bringing together advanced materials, precision manufacturing, and deep engineering expertise for mission-critical aerospace and defense systems.

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Aerospace-grade qualification discipline
The Collaboration

Two companies. Complementary strengths. One coordinated sealing experience.

CDI-Hallite Aerospace is a collaboration between CDI and Hallite — two separate companies, both part of the Michelin Group, working together to serve aerospace and defense. By aligning their processes, policies, and customer service, and bringing together their supply chains, they deliver greater efficiency and a more seamless experience across the complete sealing challenge — from material selection through design, manufacturing, qualification support, and lifecycle performance.

CDI brings

Advanced polymer and fluoropolymer engineering, precision manufacturing, machining expertise, and a broad high-performance materials portfolio.

+

Hallite brings

100+ years of sealing heritage, hydraulic cylinder expertise, premium seals, wipers and bearings, CAD design tools, and a global service network.

Engineering the solution from the material up
What it means for customers

Capability connected to outcomes that matter on the platform.

01

Increased time on wing

Advanced materials, precision manufacturing, and sealing application expertise help support longer service intervals.

02

Improved reliability

Integrated material selection, seal design, and manufacturing discipline help support consistent performance in demanding systems.

03

Less maintenance & downtime

Engineered seals, wipers, bearings, and contamination control can help reduce replacement frequency and service disruption.

04

Lightweight efficiency

Optimized polymers, thermoplastics, elastomers, and engineered designs can support weight and efficiency goals.

Organized around the sealing problem

Solutions built around the challenge you need to solve.

Not a generic catalog. CDI-Hallite Aerospace structures its portfolio around dynamic sealing, static sealing, wear and contamination control, and advanced materials — so the conversation starts with the application, not the part number.

Dynamic

Dynamic Sealing

For systems involving motion, pressure, speed, friction, extrusion risk, and wear.

OptiSeal®Cap SealT-SealRod & Piston SealsPiston Ring
Static

Static Sealing

For interfaces where controlled compression, hardware geometry, and surface finish are critical.

Face SealsStatic SealsBack-Up Rings
Wear

Wear & Contamination Control

Protecting hydraulic and motion-control systems from scoring, debris ingress, friction, and side loading.

BearingsWipersScrapersVee PacksUnitized Pistons
Materials

Advanced Materials

Aligning sealing performance with motion, pressure, temperature, media exposure, wear, friction, and weight.

Armorlene® PTFEHythane® TPUArylast®Arylex®
Advanced materials

Material depth, matched to the application.

Armorlene®

PTFE-based family

Associated with low friction and chemical resistance for dynamic and static sealing where PTFE-based performance is required.

Hythane®

Thermoplastic polyurethane

A Hallite TPU family used across rod seals, piston seals, wipers, scrapers, and static seals in hydraulic cylinder applications.

Arylast®

Engineered elastomer

An engineered elastomer family associated with elastic sealing and recovery for demanding sealing interfaces.

Arylex®

High-performance thermoplastic

A high-performance thermoplastic family associated with structural strength and durability.

Elastomers

NBR · HNBR · FKM · FFKM · EPDM · FVMQ

Elastomer options selected by application requirement across temperature, media exposure, and sealing behavior.

Plastics & Composites

PTFE · PEEK · PPS · UHMWPE

Engineered plastics, thermoplastics, and bonded composites for challenges a single material alone may not meet.

Support beyond the part

Sealing performance is a system, not a single component.

Reliability depends on the right combination of material, seal geometry, surface finish, extrusion gap, compression range, installation method, operating conditions, and quality discipline. CDI-Hallite Aerospace engineers the full sealing system — not just the profile and not just the material.

Application & system review
Material selection support
Seal design & geometry
Hydraulic cylinder expertise
Housing & installation guidance
Surface finish & extrusion review
Manufacturing process alignment
Quality & qualification support
11,000+
3D CAD models · 150+ file formats

Hallite's digital design resources help engineering teams evaluate sealing options and integrate components into development workflows — strengthened by CDI's advanced material and manufacturing knowledge so geometry, material, and production method work together.

Where we serve

Mission-critical platforms across aerospace and defense.

Commercial Aircraft
Rotary Wing & Helicopters
Military Aircraft
Space Exploration
Missile & Satellite
Ground Support
Advanced Mobility
Maintenance, Repair & Overhaul
Defense Platforms
Test & Development
Backed by the Michelin Group
Heritage & backing

Decades of expertise, brought together through collaboration.

Individually, CDI and Hallite have served aerospace and industrial markets for decades. As two separate Michelin Group companies, they are gaining efficiency by collaborating on this aerospace initiative — integrating processes, policies, and customer service, and combining their supply chains to give customers a more coordinated experience across materials, design, and manufacturing, with the global footprint and supply chain resilience that long program lifecycles demand.

The result is simple for the customer: instead of coordinating separate suppliers, you work with two companies operating as one collaborative team across the complete sealing challenge.

Bring us the application challenge

Let's engineer the sealing path forward.

Whether the issue is leakage, wear, contamination, installation, service interval, material selection, weight, or qualification complexity — CDI-Hallite Aerospace can help evaluate the sealing path for your mission-critical application.