Overview of Carco

MORE THAN A CENTURY OF EXPERIENCE

From leather seals for hydropower plants in the Alps back in year 1900 to today’s giant seals for tunnel boring machines. CARCO is a global seal supplier covering a variety of seal profiles and materials, from fabric reinforced elastomers to thermoplastic polymers.

This is the CARCO evolution in more than a century.

Today CARCO is a Group of companies with more than 100 people in 5 Countries. Headquarter is in Basiano (Milan – Italy), with sales offices in Germany, France, USA and China. Manufacturing facilities are in Italy and USA.

Never compromising on quality, we have been manufacturing a huge number of rotary and hydraulic seals with no limit in diameter.

Each CARCO seal takes large responsibility, as we are dedicated to challenging and critical applications, there is no room for mistakes.

In 1992 CARCO was amongst the first ISO certified companies in Italy.

FAST AND EXPERTS IN WHAT WE DO

Short delivery time is part of CARCO. Large diameter seals for metal forging presses or giant wind mills are available in 1 week or less.

CARCO is application oriented: to satisfy the customer’s requirements we need to know the machinery in which our seal is fitted.

Our technical department specifies the correct seal profile and material to offer the longest seal life and prevent unscheduled machine shutdown.

CARCO engineers recommend: type of seal, seal housing, lubrication, metalwork hardness and roughness, etc. – the complete project.

We can also provide FEA analysis so we can predict the behavior of the seal under certain conditions.

Our test rigs enable us to explore new projects and our laboratory can test the chemical compatibility of our materials with any fluid.

We can have CARCO staff replace seals on site, worldwide, with gluing and hot joint technologies to prevent costly machine disassembling.

FABRIC RUBBER HYDRAULIC PACKINGS FOR RECIPROCATING APPLICATIONS

SIZE
From mm 100 to mm 2500 diameter and larger, endless and split.

FRICTION

CARCO PRODUCTS ARE AVAILABLE WITH CARCOFLON SURFACE TREATMENT TO REDUCE FRICTION VALUE
PLEASE ASK FOR DETAIL

NORMAL DUTY APPLICATIONS UP TO 35 Mpa

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• hydraulic cylinders
• drawback cylinders in forging and extrusion presses
• billet shears
• metal scrap presses
• chipboard panels presses

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• ceramic presses
• refractory presses
• rubber moulding presses
• injection moulding presses
• hydropower machinery

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CARCOTEX/UN

CLASSIC HYDRAULIC PACKING

• suitable for most normal duty applications
• piston seal (CARCOTEX/UN/PIS) or rod seal (CARCOTEX/UN/ROS)
• designed to be compressed axially: intermediate rings energised by green male adapter
• suitable for fixed or adjustable housings, any housing height
• available split or endless

CARCOTEX/SG

AUTOMATIC HYDRAULIC PACKING

• applications with pressure cycles, assuring no leakage at both high and very low pressure
• piston seal or rod seal (not recommended for double acting pistons)
• designed to axially “float” in the housing: red male adapter is pressure responsive
• usually fitted in fixed housings, any housing height
• available split or endless

CARCOTEX/UG

AUTOMATIC HYDRAULIC PACKING

• small housings
• piston seal or rod seal
• designed to axially “float” in the housing
• suitable for fixed housings
• available endless
• CARCOFLON surface treatment on dynamic side

HEAVY DUTY APPLICATIONS UP TO 63 Mpa

• forging presses
• aluminium extrusion presses
• forging and extrusion of other non-ferrous metals
• steel mill hydraulic cylinders

Providing maximum resistance to cope with the toughest working conditions:

• heavy shock loads
• lateral thrust
• large ram misalignment
• large extrusion gaps

CARCOTEX/SP

HEAVY DUTY HYDRAULIC PACKING

• anti-extrusion female adapter with Kevlar® extra reinforcement
• compressed axially in the housing
• suitable for adjustable housing
• usually supplied in split form

CARCOTEX/SP/SG

HEAVY DUTY AUTOMATIC HYDRAULIC PACKING

• a specially designed mail adapter gives excellent sensitivity even at very low pressure
• leak-free performance in cases of worn rams and large misalignment
• not compressed axially in the housing, it can be fitted easily without having to calculate the preload

CARCOWIP

HIGHLY EFFECTIVE SCRAPERS

• recommended for abrasive dirty and dusty environment
• double effect version available (CARCOWIP/2) carcoseal

 

PRESSURE OIL SEALS

When pressure exceeds 0,5 bar (7 psi) on rotating applications, pressure oil seals are recommended.

MAIN APPLICATIONS

• marine applications: fin stabilizers, thrusters, etc. sealing oil and seawater
• pumps and mixers
• cement and sugar mills

CARCOSEAL/AP

PRESSURE OIL SEAL WITH ANTI-EXTRUSION RING

• lip supported by anti-extrusion PTFE ring
• available in endless form

Please contact our technical dept. for details

CARCOSEAL/AP/WT

PRESSURE OIL SEAL WITHOUT ANTI-EXTRUSION RING

• lip supported directly by the retaining flange
• split version available to reduce maintenance time

Please contact our technical department for details

PRESSURE SEAL KIT

PRESSURE OIL SEALS FITTED IN TANDEM

• separated by lantern rings
• shaft wear reduction (particularly with abrasive media: sand, sugar, etc.)
• excellent alternative to braided packings

TUNNEL BORING MACHINE SEAL

CARCOSEAL/TM

• thick rounded seal lip
• suitable for severe applications, abrasive media, slurries, etc.
• max pressure: 5 bar (70 psi)
• max shaft speed: 2 m/s (400 ft/min)

LARGE ECCENTRICITY SEAL

CARCOSEAL/LDS

• suitable for rotating shafts with very large eccentricity
• LDS is an axial seal fixed to the shaft and the lips run against the housing face
• manufactured from full rubber
• energised with a stainless steel garter spring

Please contact our technical department for details

CUSTOMIZED SEALING SOLUTIONS

Our technical department can design customized sealing solutions for a wide range of applications

CARCOSEAL/UN/LA Antidust lip

This design incorporates an additional lip to keep dust and water away from the main lip contact area

CARCOSEAL/UN/LL Long lip

Recommended for very large eccentricity of the shaft

CARCOSEAL/ATLMP® Anti Twist Lip

• seal design developed for steel and aluminium rolling mills
• preventing the lip from being damaged during roll fitting
• available in UN and SCA profiles

FABRIC RUBBER OIL SEALS FOR ROTATING SHAFTS

SIZE
From mm 100 to mm 2000 diameter and larger, metric and imperial sizes.

MAIN APPLICATIONS

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• hot and cold steel rolling mills
• hot and cold aluminium rolling mills
• gearboxes
• pulp and paper machines

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• ship components: rudders, fin stabilizers, thrusters, gearboxes, steering gears
• tunnel boring machines

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• wind mills
• rubber and plastic mixers
• stone crushers
• mechanical presses

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CARCOSEAL/UN

MOST POPULAR PROFILE

• suitable for most applications
• fitted with retaining plate
• special lip design to guarantee no leakage and adequate lip lubrication
• lip loaded with stainless steel garter spring

CARCOSEAL/SCA

SEAL PROFILE WITH LUBRICATION GROOVES

• providing additional external lubrication
• back to back fitting: 2 Carcoseal/SCA are fitted together as roll neck bearing seals in steel and aluminium rolling mills to prevent roll coolant and scale contaminating the bearing oil
• tandem fitting: when optimum sealing performance is needed

CARCOSEAL/UN/SPLIT
CARCOSEAL/SCA/SPLIT

SPLIT DESIGN

• short maintenance time
• shaft removal not necessary
• easy seal fitting
• seal ends moulded purely from rubber, ensuring a leak free static seal at the joint

CARCOSEAL/UN/SF
CARCOSEAL/SCA/SF

SELF-RETAINING DESIGN

• suitable for housings without retaining plates
• special reinforced seal back
• only available in endless form

CARCOFLON® FOR FRICTION REDUCTION

SPECIAL SURFACE TREATMENT OF SEAL LIP

• friction and heat generation reduction
• lip protection at machine start up and during dry running
• longest service life

HIGH PERFORMANCE OIL SEALS FOR ROTATING SHAFTS

FABRIC RUBBER BACK:

• EASY TO FIT
• RE-USABLE AFTER DISASSEMBLING
• SPLIT VERSION TO REDUCE MAINTENANCE TIME
• STATIC SEAL ON THE OUTER DIAMETER PREVENTS LEAKAGE BETWEEN SEAL AND HOUSING
• NO RISK OF HOUSING DAMAGE DURING SEAL FITTING

RUBBER LIP:

• SPECIAL PROFILE TO GUARANTEE NO LEAKAGE AND ADEQUATE LIP LUBRICATION
• STAINLESS STEEL GARTER SPRING TO KEEP THE LIP
• HOMOGENEOUSLY IN CONTACT WITH THE SHAFT AT HIGH SPEED AND HIGH SHAFT ECCENTRICITY
• DEEP GROOVE TO ENSURE THE SPRING IS ALWAYS IN THE CORRECT POSITION
• CARCOFLON SURFACE TREATMENT TO REDUCE FRICTION

LONG LIFE HYDRAULIC PACKINGS FOR HEAVY DUTY APPLICATIONS

HIGH RESISTANCE RUBBER MALE ADAPTER;
DIFFERENT DESIGNS AVAILABLE ACCORDING TO WORKING
CONDITIONS

FABRIC RUBBER INTERMEDIATE RINGS TO GUARANTEE MAXIMUM
SERVICE LIFE AND NO LEAKAGE

THICK FABRIC RUBBER FEMALE ADAPTER WITH ADDITIONAL
KEVLAR® REINFORCEMENT TO PREVENT EXTRUSION UNDER HEAVY
SHOCK LOADS