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Engineering sealsfor reliability in the extreme
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A Company atthe forefrontof technology
Experience
Since the 1920s the Company has spe-
cialised in the design and manufactureof heat resisting wrought alloy sealingrings and associated products, combin-ing technology with innovation toachieve world class quality and preci-sion.
Cross engineers have pioneered anddeveloped techniques and equipmentdesigned to form wire and rod materialsinto rings with sections and gap config-urations that could not have previouslybeen successfully achieved. Our teamof enthusiastic engineers performs acontinuous programme of research and
development into new techniques, build-ing on the experience of many years.
Comprehensive in-house heat treatment,surface treatment and non-destructivetesting facilities enable Cross to offer acomplete service with the most stringentquality control at all stages. Consistentlyhigh standards are guaranteed by theuse of statistical process control tech-niques from the raw material stagethrough to finished product.
The Company owns two modern fac-tories at Bath and Devizes in the westof England. Currently there is a totalworking area of over 150,000 sq.ft.and the Company owns land at bothsites to increase this considerably ifneeded. Well over 200 people areemployed and there is an immensepool of specialist skill at all levels inthe workforce.
Environment
It is the Companys policy to
continually improve the environ-mental awareness of itsprocesses and procedures and
to work towards accreditation to
the appropriate standards.
Research and Development
Cross pursues a policy of continuous
research and development to meet the
ever-increasing demands of moderninternational industry.
Substantial test facilities and laborato-
ries enable Cross engineers to constant-
ly achieve improvements in product per-
formance. Cross research facilities alsosupport customer development pro-
grammes to ensure that competitive
technological advantages are main-
tained.
In addition to product and materials
research, Cross technicians also designand develop special-purpose plant and
processes for the manufacture of
emerging new technologies.
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For more than seventy years theCross Manufacturing Company hasbeen developing and manufacturing
high quality products for applicationsdemanding accuracy and integrity.
The Company was established bythe late Roland Cross, a CharteredEngineer, who evolved a process forthe manufacture of high performancepiston rings from wire for his rotaryvalve engine. This process has beenconstantly developed and refined toprovide a wide range of quality prod-ucts.
The process has proved particularlysuitable for the manufacture of com-
ponents made from cobalt and nickelbased alloys.
These alloys are used in high tem-perature conditions that are also cor-rosive. The sort of conditionsencountered in aircraft gas turbines,power generation and otheradvanced technologies.
Advanced engineering,sealing solutions
Piston sealing rings Special lock washers
Cross single coil spring washers aremanufactured by a special processto satisfy the standards of qualityand performance demanded by hightechnology industries including aero-space and defence equipment.
Designed and manufactured to con-sistently high standards in a widevariety of alloys to meet the mostdemanding service conditions.
Large diameter metal seals
Designed for use in hot and difficultenvironments, diameters upto 1900mm (75) are in regularproduction, with largersizes also possible.
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Cross brush seals advance the efficiencyof turbine machinery in many diverseapplications.
Offering a marked improvement over
conventional labyrinth seals, brush sealsare proven to offer much reduced leak-age and longer service life, particularly inhigh temperature applications.
The brush seal consists of a ring contain-ing many thousands of heat resisting finewires, which touch the rotor, thus formingan effective barrier against flow. Thewires are arranged in such a way to bereadily deflected radially while support-ing the gas pressure in an axial direction.They are used in aerospace and largeground running turbines with shaft diam-eters up to 2000mm (80).
Turbocharger sealing rings
Precision miniature rings provide turbine
shaft sealing in car and commercial tur-bochargers. Millions of these rings are
made at our Devizes factory every year.
Cross filters are designed to filter
solid particles from liquids automati-
cally, efficiently and continually with
minimal loss of liquid. The filter is
made from a coil which offers a pre-
cise filtration gap and can open even-ly along its length to allow 100%
cleaning during every backwash. The
system is particularly good at remov-ing solid particles from water
pipelines. It is being used with great
success on the cooling pipework ofthe Channel Tunnel.
Spiralock wire thread inserts
The Spiralock self-locking insert fea-
tures a unique thread form that main-
tains bolt tension under severe vibra-tion conditions and is used in appli-
cations where maximum integrity is
essential such as helicopter gearbox-
es and aluminium gearbox casingson underground trains.
BoltTappedHole
Brush seals
High performance liquid filters
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Reliability cannot bea compromise
Cross products are found in industrialand defence industry applications wher-
ever the ultimate in reliability and per-formance is essential.
Applications range from miniaturehigh-precision seal rings in automotiveturbochargers to complex large sealsfor the aerospace and nuclearpower industries.
The choice of materials is complex andwe offer advice based on our own expe-rience and test results for the use of dif-ferent alloys in a variety of conditions.
Typical materials held in stock include:
Nickel AlloysNimonic 75, 80A, 90, C.263Inco 600, 625, 718, X.750, 901Waspaloy
Cobalt AlloysL.605 Haynes 25
Carbon SteelsBS. S.201, S.203, S.204, S.205, S.135
Stainless SteelsDTD.734 and 189, Type 304, 316, 321,347, Nitronic 60, BS 420.S.45, DTD.326,
Jethete
High Speed Steels2%, 14% and 18% Tungsten H.S.S.MI, M2
BronzePhosphor Bronze,Aluminium Bronze
Aluminium3103, 6063
Material is held in our Quality ControlledBonded Stores, each batch with appro-
priate aerospace and/or proprietary cer-tificate.
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Cross Manufacturing Company (1938) Ltd.
World-wide recognition
Head Office and FactoryCross Manufacturing Co. (1938) Ltd.Midford RoadBath BA2 5RR, EnglandTel: +44 (0)1225 837000Fax: +44 (0)1225 [email protected]
Devizes FactoryHopton Park, London Road
Devizes SN10 2EYEnglandTel: +44 (0)1380 722421Fax: +44 (0)1380 [email protected]
M5
M4
Bath Devizes
London
ABB Kent Introl
Aermacchi
Alstom Automation
Alstom Energy Steam Turbines
Alstom Energy Gas Turbines
Alstom France
BMW RR
BNFL
Bombadier Aerospace Short Bros plc
Borg Warner Associates 3.K Warner
Borg Warner Associates EuropeBorg Warner Associates USA
British Aerospace Airbus
British Aerospace Military Aircraft
British Aerospace Space
Cosworth Racing
Cummins Engine
Daimler-Chrysler Aerospace-MTU
Delphi Automotive
Dowty Group
Eaton S.A.
Eurotunnel
Fiat Aviazione
Flight Refuelling
GE Aircraft Engines
GE Energy Products - Europe
GE Power Systems
GE Engine Services
GKN Westland Aerospace
GKN Westland Helicopters
Hitachi
Holset Engineering
Honeywell (Allied Signal)
(13 aerospace and vehicle factories worldwide)
HS Marston Aerospace
IHI
IHI Turbo Italy
IHI Turbo USA
ITP
Kimberley Clark
Lentern
Microturbo
MHI Equipment (Europe)
MHI Automotive (Japan)
MHI Power
Rolls Royce
Rolls Royce Corporation (Allison)
Siemens Westinghouse
Siemens Power
Siemens Canada
Severn Trent
Sundstrand Aerospace
Senior Flexonics
Thames Water
TRW Lucas Aerospace
Turbomeca
Vickers Aerospace
Volvo Aero
Weir Pumps
Over 90% of output is exported directly or indirectly. Organisations which regularly use our products include:
Bristol
www.crossmanufacturing.com
Cross Manufacturing Company recognises all registered trademarks.
Publication CMR/523/3. Printed in the UK.
NATIONAL
ACCREDITATION
OF CERTIFICATION
BODIES
LL
OYD
SREG
ISTE
R QUALIT
YCOMPA
NY
ISO9 0 02
LRQA924766
Cert. No. 924766