Your Name Is How We Make Ours
The scope of John Crane mechanical seal product range far exceeds any other seal manufacturer. From small elastomer bellows seals used in millions of domestic water pumps to double mechanical seals that ensure maximum sealing safety and large, highly customized dry-running gas seals for mission critical high speed turbo compressors, John Crane has the right product for any application.
John Crane world-class rotating equipment technologies, paired with an unmatched breadth of applied engineering expertise, meet virtually all international standards including API 682 and help plants reduce maintenance costs, slash down time and improve reliability. When it comes to keeping your rotational equipment running 24/7, John Crane’s comprehensive range of mechanical seals and systems has you covered.
Dry Gas Seal
Aura (TM)
The Next Generation of Jhon Crane Gas Seal
The Next Generation of Jhon Crane Gas Seal
Aura® reduces operational and transactional costs using a patented polymeric sealing device
Aura (TM) 120NS
Narrow Section Dry Gas Seal
Narrow Section Dry Gas Seal
Aura 120NS Aura® 120 narrow section gas seals enable the latest John Crane gas seal technology to be fitted into older equipment, bringing with it the benefits of non-contacting design.
Type 28AT
Non-contacting Gas Seal for Turbo Compressors
Non-contacting Gas Seal for Turbo Compressors
Type 28AT: The original gas seal, with a design pedigree stretching back over 30 years and evolving gradually, installed and proven in thousands of compressors all around the world and remaining the preferred seal choice for many customers.
Type 28XP
Non-contacting Gas Seal for Turbo Compressors
Non-contacting Gas Seal for Turbo Compressors
Type 28EXP: The product for the most challenging and hostile environments with proven and independently audited performance to 425 bar(g).
Type 28EXP
Non-contacting Gas Seal for Turbo Compressors
Non-contacting Gas Seal for Turbo Compressors
Type 28EXP: The product for the most challenging and hostile environments with proven and independently audited performance to 425 bar(g).
Type 83
Separation Seal (Contacting Technology)
Separation Seal (Contacting Technology)
The Type 83 is a dual-segmented carbon bushing assembly designed to prevent the migration of bearing oil to the dry gas seal cartridge.
Type 93FR
Separation Seal (Non-contacting Technology)
Separation Seal (Non-contacting Technology)
The Type 93FR is a non-contacting carbon bushing designed to protect dry gas seals from bearing oil ingress.
Type 28ST
Non-contacting Gas Seal for Steam Turbines
Non-contacting Gas Seal for Steam Turbines
Type 28ST combines proven rotating groove technology and high-temperature secondary seals to reduce steam leakage by nearly two orders of magnitude,
as compared to traditional sealing devices, such as segmented carbon rings and labyrinths.
Type 28VL
Non-contacting Gas Seal for Vaporizing Liquids
Non-contacting Gas Seal for Vaporizing Liquids
Utilizing proven spiral groove technology, the Type 28VL harnesses the rotational energy of the pump shaft to vaporize the process fluid at a
controlled rate, creating a stable gas film that lubricates the seal faces.
Wet Gas Seal
Elastomer Bellow Seals
The Type 93FR is a non-contacting carbon bushing designed to protect dry gas seals from bearing oil ingress.
Metal Bellow Seals
Type 28ST combines proven rotating groove technology and high-temperature secondary seals to reduce steam leakage by nearly two orders of magnitude,
as compared to traditional sealing devices, such as segmented carbon rings and labyrinths.
Non-contacting Seals
The Type 93FR is a non-contacting carbon bushing designed to protect dry gas seals from bearing oil ingress.
O-ring Pusher Seals
Type 28ST combines proven rotating groove technology and high-temperature secondary seals to reduce steam leakage by nearly two orders of magnitude,
as compared to traditional sealing devices, such as segmented carbon rings and labyrinths.
O-Ring Pusher
Type 1648
API 682-qualified, Single Catridge, Type “A” O-Ring Pusher Seal
API 682-qualified, Single Catridge, Type “A” O-Ring Pusher Seal
The Type 1648 is a high-performance single cartridge pusher seal designed to help prevent emissions leakage in most refinery applications.
Type 2648
API 682-qualified, Dual Unpressurized Catridge, Type “A” O-Ring Pusher Seal
API 682-qualified, Dual Unpressurized Catridge, Type “A” O-Ring Pusher Seal
The Type 2648 is a high-performance, low-emission cartridge seal designed to provide additional safety for hazardous applications
and applications where the sealing environment needs to be controlled.
Type 270F
Heavy-duty Catridge Seal for Boiler Feed Circuit Applications
Heavy-duty Catridge Seal for Boiler Feed Circuit Applications
Type 270F is a boiler feed seal designed for the most demanding performance, and is normally supplied as a cartridge. The face and seat are computer-engineered for optimum distortion control leading to high reliability and long operating life.
The Type 34 is a short, DIN-balanced seal for general duty in the processing, refinery and petrochemical industries.
Type 3648
API 682-qualified, Dual Unpressurized Catridge, Type “A” O-Ring Pusher Seal
API 682-qualified, Dual Unpressurized Catridge, Type “A” O-Ring Pusher Seal
The Type 3648 is a high-performance, low-emission cartridge seal designed for maximum containment of hazardous fluids and light hydrocarbons.
Type 4610
Compact, General-duty, Single Catridge O-Ring Seal
Compact, General-duty, Single Catridge O-Ring Seal
The Type 4610 single cartridge seal, available off-the-shelf the world over, combines affordability with fluid-sealing dependability.
Type 4620P
Compact, General-duty, Single Catridge O-Ring Seal with Pumping Ring
Compact, General-duty, Single Catridge O-Ring Seal with Pumping Ring
The Type 4620P dual cartridge seal, available off the shelf the world over, brings a new era of affordability to fluid sealing with assured dependability.
Type 48HP
Low-emission, High-pressure O-ring Shaft Seal for Light Hydrocarbon Services
Low-emission, High-pressure O-ring Shaft Seal for Light Hydrocarbon Services
Type 48 seals evolved from the successful, proven John Crane Type 8B1 design, the preferred choice for safe, reliable,
unpressurized tandem and pressurized dual seal arrangements in petroleum services for more than four decades.
Type 48LP
Low-emission, High-pressure O-ring Shaft Seal for Light Hydrocarbon Services
Low-emission, High-pressure O-ring Shaft Seal for Light Hydrocarbon Services
Type 48 seals evolved from the successful, proven John Crane Type 8B1 design, the preferred choice for safe, reliable,
unpressurized tandem and pressurized dual seal arrangements in petroleum services for more than four decades.
Type 48MP
Low-emission, High-pressure O-ring Shaft Seal for Light Hydrocarbon Services
Low-emission, High-pressure O-ring Shaft Seal for Light Hydrocarbon Services
Type 48 seals evolved from the successful, proven John Crane Type 8B1 design, the preferred choice for safe, reliable,
unpressurized tandem and pressurized dual seal arrangements in petroleum services for more than four decades.
Type 28SC
Dry-contacting Secondary Contaiment Seal
Dry-contacting Secondary Contaiment Seal
Dry-running, contacting seals employ a technology based on careful material selection and precise control of contact forces.
Type 48XP
High-perfomance Catridge, Multi-spring, O-ring Pusher Seal with Lubrication-enhancing and Controlled Leakage Features
High-perfomance Catridge, Multi-spring, O-ring Pusher Seal with Lubrication-enhancing and Controlled Leakage Features
Patented John Crane Laserface® interface groove technology. The Type 48XPVL is a new and innovative technology that has been
developed to maximize the performance and reliability of liquid lubricated mechanical seals.
Non-Pusher Elastomer
Type 8648VRS
Non Pusher Elastomer Seal
Non Pusher Elastomer Seal
8648VRS is a standardized non-pusher elastomer mechanical seal using patented technology, designed specifically for difficult hydrocarbon oil pipeline applications.
Split Seals
Type 3710
Compact Catridge O-ring Split Seal
Compact Catridge O-ring Split Seal
The Type 3710 mechanical seal uses our advanced split seal technology to meet today’s environmental guidelines as well as future regulations.
Type 3740
Advanced Design, Wet-running Catridge O-ring Split Seal
Advanced Design, Wet-running Catridge O-ring Split Seal
The Type 3740 mechanical seal family, are split seals that use the latest modular split seal technology from John Crane.
Type 3740D
Dry Running Catrdige Split Seal
Dry Running Catrdige Split Seal
The Type 3740D dry-running split seal is a mechanical seal designed for the large shaft run-out and harsh operating conditions commonly
associated with top-entry vessel mixing services and other dry-running applications.
Type 3740XL
Extra Large Wet Running Catridge Split Seal
Extra Large Wet Running Catridge Split Seal
The Type 3740XL wet-running split seal is the extra large version of John Crane’s successful Type 3740 split seal that incorporates proven mechanical seal design features for fast and easy seal installation, while providing reliable seal performance in demanding large pump and other big rotating equipment fluid services.
Type 75FS
Dry-running Fully Split Mixer Seal
Dry-running Fully Split Mixer Seal
The Type 75FS dry- or wet-running fully split mechanical seal is designed specifically to eliminate process contamination and significantly reduce maintenance on larger types of equipment that previously could not accommodate mechanical shaft seals.
Type 375FS
Heavy-duty Split Elastomer Bellow Seal for Agitators, Mixer and Pumps
Heavy-duty Split Elastomer Bellow Seal for Agitators, Mixer and Pumps
The Type 37FS fully split mechanical seal helps significantly reduce maintenance on larger, difficult-to-seal equipment.
Type 37FSB
Heavy-duty Balance Split Elastomer Bellows Seal for Agitators, Mixer and Pumps
Heavy-duty Balance Split Elastomer Bellows Seal for Agitators, Mixer and Pumps
The Type 37FSB fully split mechanical seal helps significantly reduce maintenance on larger, difficult-to-seal equipment.
Type 73
Inflatable Backup Shaft Seal to Accompany Split Seal
Inflatable Backup Shaft Seal to Accompany Split Seal
Our inflatable backup seal is primarily used to hold process fluids, without leakage, while repairs are made to the primary seal, packing and other equipment components.
PTFE Bellow Seals
TYPE 10R
PTFE Bellows Seal for Extreme Corrosion Resistance
PTFE Bellows Seal for Extreme Corrosion Resistance
A complete externally mounted PTFE seal with exchangeable face insert for use in extremely corrosive
applications such as high concentrations of acids, salts, strong oxidizing and reducing agents and chemically active organic compounds.
Type 10T
PTFE Bellows Seal for Extreme Corrosion Resistance
PTFE Bellows Seal for Extreme Corrosion Resistance
A complete externally mounted PTFE seal with exchangeable face insert for use in extremely corrosive
applications such as high concentrations of acids, salts, strong oxidizing and reducing agents and chemically active organic compounds.
Type 20/20R
Chemically Inert Materials In All Areas and On All Surfaces
Chemically Inert Materials In All Areas and On All Surfaces
Types 20 and 20R shaft seals feature chemically inert materials in all areas and on all surfaces in contact with the liquid being sealed.
Metallic components, springs and clamp ring are located outside the pump seal chamber, isolated from the process liquid.
PTFE Wedge
Type 109
Shaft-mounted Multi-spring Wedge Seal
Shaft-mounted Multi-spring Wedge Seal
A wedge seal for use on corrosive applications, typically for chemical or hydrocarbon processing.
Type 109B
Balanced Shaft-mounted Multi-spring Wedge Seal
Balanced Shaft-mounted Multi-spring Wedge Seal
A balanced wedge seal for use on corrosive applications, typically for chemical or hydrocarbon processing.
Type 59B
General Purpose DIN, Balanced, Multi-spring, PTFE Wedge Seal
General Purpose DIN, Balanced, Multi-spring, PTFE Wedge Seal
A DIN seal for general and high-pressure duties in the chemical, refinery, petrochemical and pharmaceutical industries. Alternative seat designs and material options are available to suit product and operating conditions of applications. Typically applications of a corrosive nature, cryogenic and high temperature.
Type 59U
General Purpose DIN, Multi-spring, PTFE Wedge Seal
General Purpose DIN, Multi-spring, PTFE Wedge Seal
A DIN seal for general low- to medium-pressure duties in the chemical, refinery, petrochemical and pharmaceutical industries. Alternative seat designs and material options are available to suit product and operating conditions of applications. Typically applications of a corrosive nature, cryogenic and high temperature.
Elastomer Bellows Seal
Type 1
Full Convolution Industrial-duty Elastomer Bellows Shaft Seal
Full Convolution Industrial-duty Elastomer Bellows Shaft Seal
With its proven track record of exceptional performance, the Type 1 elastomer bellows seal is widely recognized as the industry’s workhorse. Suitable for a wide range of service conditions ranging from water and steam to chemicals and corrosive materials, the Type 1 mechanical seal is ideal for use in pumps, mixers, blenders, agitators, air compressors, blowers, fans and other rotary shaft equipment.
Type 2
Multi-purpose Non-pusher Elastomer Bellows Seal
Multi-purpose Non-pusher Elastomer Bellows Seal
The Type 2 mechanical seal is available in single, double and balanced arrangements. An outside-mounted spring results in a compact working height that enables it to fit very short stuffing boxes.
Type 21
General-duty Elastomer Bellows Shaft Seal
General-duty Elastomer Bellows Shaft Seal
Our general-purpose Type 21 mechanical seal has become the industry standard for OEM designers. Automatic adjustment compensates for abnormal shaft-end play, run-out, primary ring wear and equipment tolerances.
Type 2100
Fully Unitized, Heavy-duty Elastomer Bellows Shaft Seal
Fully Unitized, Heavy-duty Elastomer Bellows Shaft Seal
Designed for demanding applications, the Type 2100 mechanical seal is a compact, unitized, single-spring elastomer bellows seal that offers maximum durability and performance. Ideal for use in centrifugal, rotary and turbine pumps, compressors, chillers and other rotary equipment
Type 2106
Fully Unitized Elastomer Bellows Shaft Seal
Fully Unitized Elastomer Bellows Shaft Seal
The Type 2106 mechanical seal is a compact, unitized, single-spring elastomer bellows seal that not only offers durability and performance but also fast and easy installation and replacement. It retrofits the Type 6.
Type 4111
Single-use Elastomer Bellows Cartridge Seal
Single-use Elastomer Bellows Cartridge Seal
The T4111 is a revolutionary new single-use cartridge seal that simplifies the sealing process for applications using aqueous solutions, making it suitable for industries such as wastewater treatment, food and beverage, and mining. It is recommended for use on centrifugal and rotary pumps, and similar rotary shaft equipment.
Type 502
Unitized Elastomer Bellows Seal
Unitized Elastomer Bellows Seal
The Type 502 mechanical seal is one of the best-performing elastomeric bellows seals available. It is suitable for general service and provides excellent performance in a wide range of hot water and mild chemical duties. It is specifically designed for confined spaces and limited glands lengths.
Type 5611/5611Q/5611L
Universal Cartridge™ Seal Family — Single Cartridge Elastomer Bellows Seal
Universal Cartridge™ Seal Family — Single Cartridge Elastomer Bellows Seal
As the first truly universal cartridge seal, the modular family concept of John Crane’s Universal Cartridge Seal series will change your approach to sealing. Since the 5600 Series components are interchangeable, you can apply one seal family throughout your plant. This gives you the flexibility to cover more applications with less inventory, which means your maintenance is simplified, downtime is reduced, plant operating efficiency is increased and costs are lowered.
Non-Contacting Seals
Type 2800E
Non-contacting, Gas-lubricated Seals for Small-bore Rotating Equipment
Non-contacting, Gas-lubricated Seals for Small-bore Rotating Equipment
The rotating mating ring features micromachined spiral grooves that compress an inert barrier gas and create a lifting force on the primary seal faces. Gas-lubricated non-contacting seal faces operate without friction and without added heat. No seal liquid is used, which preserves 100 percent product purity.
Type 2800EH
Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal for Pumps
Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal for Pumps
The John Crane Type 2800EH is a non-contacting dual seal for non-turbo small-bore rotating equipment applications, meeting the requirements of standards such as ISO3069C and DIN 24960.
Type 2800EX
Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal For Pumps
Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal For Pumps
Patented John Crane spiral grooves are machined into the mating ring faces. A pressurized suitable inert gas is injected between the seals. As the shaft rotates, gas flows into the tip of the spiral groove and is compressed at the sealing dam, the ungrooved portion of the mating ring. At the sealing dam, gas is expanded. The resultant film pressure gives an opening force greater than the closing force, thus separating the faces.
Type 2800XA
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
The patented technology and tolerant design make these seals ideally suited for applications requiring specially engineered seals with performance even beyond that of the standard range. If your process requires special performance capability, consult John Crane for industry-leading design and applications engineering expertise.
Type 2800XP
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
The John Crane Type 2800XP is a non-contacting dual seal for non-turbo, large-bore rotating equipment applications, and complements the John Crane Type 2800E small-bore range. 2800XP seals feature new patented technology, which provides the basis for a series of enhanced end-user benefits.
Type 2800XS
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
Type 2800XS is the designation used for specially engineered seals designed for operation outside the normal parameters of Types 2800XA and 2800XP. The John Crane Type 2800XS is a non-contacting dual seal for non-turbo, large-bore rotating equipment applications, and complements the John Crane Type 2800E small-bore range. These seals feature new patented technology, which provides the basis for a series of enhanced end-user benefits.
Type 285
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps
As the worldwide leader in spiral groove technology, John Crane is the first to utilize non-contacting seals in cryogenic applications. The Type 285 can safely seal the most common industrial liquid gasses, such as liquid nitrogen, oxygen, argon and carbon dioxide. It fits the most popular cryogenic pumps — site-based and road tanker pumps — and meets liquid oxygen (LOX) safety standards. The John Crane spiral grooves enable the seal to operate on a gas film by gathering and compressing the vaporized liquid.
Type 2874
Non-contacting Dual Gas Seal Cartridge for Pumps
Non-contacting Dual Gas Seal Cartridge for Pumps
The Type 2874 is an internally pressurized, gas-lubricated, non-contacting dual cartridge seal designed for use in API, ANSI and DIN large-bore seal chambers.