Aviation
IndustryHandbook

JET ENGINES & AUXILIARY POWER UNITS (APU)High temperature and high speed: Sealing solutions for extreme conditions
Temperatures up to 365°C (690°F)

Omniseal® 103A
Spring-Energized Seal
for lubrication system

Compatibility with HPC/HTS oils
(AS5780/MIL-PRF-23699)

Omniseal® Rotary Lip
Seal (30 Series) for APU
accessory connections

Meldin® 7021
Stator Vane
BushesExcellent combination of wear resistance,mechanical properties and dimensional
stability for polyimide components
Low and High
PressureCompressor

Internal andAccessory
Gearboxes

LubricationSystemsFor rotary applications: speed up to60 m/s and beyond in special cases

Low Pressure
Turbine

AIR MANAGEMENT SYSTEMS
Omniseal® and Meldin® critical parts: Working at their best together
Temperatures up to 365°C (690°F)
Omniseal® 103A
Spring-Energized Seal
Excellent thermal oxidative stability

Meldin® 7022 Labyrinth
Seal for bleed air

Low coefficient of thermal expansion

Meldin® 7001 &Omniseal® Gasket forde-icing ducts
Bleed Air Valves

Wear resistance and low friction

Anti-Icing Systems

De-icing Ducts

LANDING GEARS
Superior performance: HVOF-coated shafts
Wide temperature range with cold
storage (from -55°C /-67°F up to> 200°C/392°F )Designed to fit standard AS4716
and MIL-G-5514 grooves

Meldin® 5330
Bearing forshock strut

Omniseal® RP
Spring-Energized
Seal for NLG

Wear resistance, peak pressure andconstant friction solution – no shrinkage
at low temperature

Precision Fit

Shock-Strut Assemblies

Actuators

Universal Joints

GOING BEYOND SEALING & MATERIAL SOLUTIONS
Meldin® components
for de-icing systems

Omniseal®
seals for APUs

Rulon® low-friction
components

Omniseal® seals forflight control actuators
Meldin® components
for flap actuators

Omniseal® high-temperatureseals for static applications
and high-speed seals forrotary applications

Meldin® bushings

OMNISEAL® POLYMERSRULON ® FLUOROPOLYMERSMELDIN® POLYIMIDES

Filled PTFE ideal sealing solution

Filled PTFE compound materials
for wear and friction controls

State-of-the-art polyimide thermoset
material used in aviation for decades• Excellent chemical compatibility with all
aerospace fluids• Choice of more than 1,000 formulations
that enhance desired properties:• High temperature resistance(up to 365°C/690°F)• Replaces elastomer products when
they reach their temperature, pressure or
chemical limits• Installation in closed or blind grooves arepossible with specific procedure and tools• Almost unlimited design capabilities withno specific tooling required• For rotary shaft applications, can handle
high speed (up to 60 m/s)
• Easier to install and replace thanmechanical seals, requires much less space
and allows easier integration• Testing capabilities for pre-validation– Mechanical strength– Wear resistance– Low abrasion in dynamic applications• High temperature/mechanical strength
combinations, as in stator vane bushing
applications in engine compressors• High dielectric strength properties suchas engine electrical harnesses• High wear resistance at various
temperatures, as in track liner applications
for thrust reverser systems• Excellent thermal stability for precise
components such as bearings or pistonrings in bleed air or de-icing systems• Exceptional chemical resistance to harshenvironments• High wear and self-lubricating properties
for applications such as abradable seals or
landing gear bushings for jet engines• Different manufacturing processes
available to produce:– Bearings– Bushings– Cup seals– Piston rings– Custom components

Meldin® material solutions are designed tocustomer specifications.

Proven in the Past…
For more than 50 years, Omniseal Solutions™ has been supplying critical parts to the aviation industry for use in commercialand military aircraft as well as helicopters. Our Omniseal®, Rulon® and Meldin® solutions are helping customers with challenges
in high temperature/pressure, weight reduction, fuel efficiency, high thermal stability and fatigue/corrosion.
As Omniseal Solutions™ understands the continuous push to improve flight in terms of safety, comfort, cost, maintenance,efficiency and power, we work closely with our customers to solve these complex issues so they can venture as high andas far as possible to meet tomorrow’s challenges.

... Prepared for the Future

FLIGHT CONTROLSLong life: A key requirement

No compression set at low temperatures

Dry running, good wear resistance,compact design solutions

Omniseal® 400A Low
Friction SpringEnergized Sealfor electromechanicalactuators

Sealing capability against HVOF-coatedhardware surfaces
Meldin® 7021
Spring Retainer

Horizontal Stabilizer Trim Actuator (HSTA)

Low friction to limit size of the actuatorsand consumption of electrical powerPrimary and Secondary Control Actuators

HELICOPTERS
Excellent sealing performance: Rotary speed up to 60 m/s

Dry runningOmniseal® Rotary
Lip Seal (70 Series)
Long life

Compatibility with engine andtransmission oils in compliance withMIL-PRF-23699 and DOD-PRF-85734
Omniseal® Rotary
Lip Seal (60 Series)
Very tight leakage requirements

Main Gearbox (MGB), IntermediateGearbox (IGB), Auxiliary Gearbox (AGB)
and Tail Rotor Gearbox (TGB)

Rotorhead Seals

CRITICAL PARTSPROTECTING CORE AVIATION SYSTEMS
Through our decades of experience, Omniseal Solutions™ hasbuilt a foundation of meeting and exceeding the continuously
increasing performance requirements of the aviation industry
for temperature (from cryogenic to extremely high), speed andchemical compatibility.
We support customers not only with our solutions but with ourteam who engineer, design, research and develop precisionsealing and material solutions, using the latest technology
tools such as Finite Element Analysis and Simulation.
Our Core Competencies:• Maintenance-free solutions• Lightweight components• Low friction materials• Vibration control• Noise reduction• Excellent chemicalresistance• Low and highpressure sealing• Low and hightemperature resistance

Solutions

Main Features

High-Performance
Spring-Energized Seals•T emperatures from -210°C to +316°C (-346°F to +600°F).
• Pressure: Vacuum up to 3,448 bar (50,000 psi).
• Low and controlled friction.
• Broad chemical resistance.

High-Performance PTFE
Rotary Shaft Seals•T emperatures from -53°C to +232°C (-65°F to +450°F).
• Shaft speed in excess of 36 m/s (7,000 fpm).
• Pressures up to 35 bar (508 psi).

RULON ® FLUOROPOLYMERSHigh-Performance
Fluoropolymer Compounds•T emperatures from -268°C to +316°C (-450°F to +600°F).
• Low friction, high wear life and broad chemical resistance.

MELDIN® POLYIMIDES

High-Performance Thermoset
Polyimide Materials•T emperatures from cryogenic through +316°C (+600°F),
intermittently up to +482°C (+900°F).
•S uperior strength and rigidity combined with self-lubrication properties.

OMNISEAL® METALSHigh-Performance Metal Seals• Temperatures from cryogenic up to +1,093°C (+2,000°F).
• From ultra-high vacuum to 6,894 bar (100,000 psi).
• Leakage performances as low as 10-12 sccs with GHe

OMNISEAL® POLYMERSONE GLOBAL TEAM… A DEDICATED CUSTOMER FOCUS

GLOBAL & LOCAL PRESENCE
With 17 manufacturing facilities in 10 different countries, Omniseal Solutions™ is a diverse groupthat is committed to being customer centric.
Contact our team of experts for more information. We have local resources to support you!
· Americas: Garden Grove, CA, USA; Bristol, RI, USA; Orange, CT, USA; Cleveland, OH, USA; Northboro, MA; Saltillo, MX· Europe: Kontich, Belgium; Mechelen, Belgium; Vimercate, IT; La Rioja, Spain; Kolo, Poland; Willich, Germany· Asia: Shanghai, China; Bangalore & Chennai, India; Suwa & Tokyo, Japan; Seoul & Incheon, South Korea; Taipei, Taiwan

help@omniseal-solutions.com
www.omniseal-solutions.com
Omniseal®, Rulon®, and Meldin® are registered trademarks of Saint-Gobain Performance Plastics Corporation.
Limited Warranty: For a period of 6 months from the date of first sale, Saint-Gobain Performance Plastics Corporation warrants
this product(s) to be free from defects in manufacturing. Our only obligation will be to provide replacement product for anyportion proving defective, or at our option, to refund the purchase price thereof. User assumes all other risks, if any, including therisk of injury, loss or damage, whether direct or consequential, arising out of the use, misuse, or inability to use this product(s).
SAINT-GOBAIN PERFORMANCE PLASTICS DISCLAIMS ANY AND ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED,INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
NOTE: Omniseal Solutions™ and Saint-Gobain Performance Plastics Corporation does not assume any responsibility or liability
for any advice furnished by it, or for the performance or results of any installation or use of the product(s) or of any final productinto which the product(s) may be incorporated by the purchaser and/or user. The purchaser and/or user should perform its
own tests to determine the suitability and fitness of the product(s) for the particular purpose desired in any given situation.
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