Industrial Seals & Sealing Solutions
Industrial Seals & Sealing Solutions Australia
Industrial Experts supplies a comprehensive range of industrial seals and sealing solutions for hydraulic, rotary, mobile equipment and heavy-duty applications throughout Australia.
Industrial sealing components play a critical role in keeping machinery operating reliably. The correct seal helps retain lubricants, exclude contaminants, protect bearings and internal components, and reduce premature wear in demanding operating environments.
Our industrial seal range is suited to applications across mining, earthmoving, agriculture, transport, hydraulic equipment, manufacturing, material handling and general industrial machinery.
We supply seal profiles for both reciprocating hydraulic systems and rotating shaft applications, including DKB and DKBI wiper seals, cassette seals, Combi axle seals and TA/TB rotary oil seals.
Whether you are replacing a worn component during maintenance, rebuilding hydraulic equipment or sourcing seals for an ongoing production requirement, Industrial Experts can assist with identifying the correct seal by dimensions, profile, part number, equipment details or existing sample.
Industrial Seals for Hydraulic & Rotary Equipment
Industrial machinery relies on different seal designs depending on how the equipment operates.
Hydraulic cylinders require seals that accommodate linear reciprocating movement, while rotating equipment such as gearboxes, axles and wheel hubs require seals designed around a rotating shaft or bearing system.
Using the wrong seal profile can lead to:
- Lubricant leakage
- Contamination ingress
- Premature bearing wear
- Hydraulic fluid contamination
- Shaft or rod damage
- Reduced equipment reliability
- Increased maintenance frequency
For this reason, seal selection should take into account the movement type, sealing function, operating environment, fluid, temperature, shaft or rod dimensions and equipment design.
Our Industrial Seal Range
DKB & DKBI Hydraulic Wiper Seals
DKB and DKBI seals are hydraulic rod wipers, also known as scraper seals or dust seals.
They are installed at the external end of a hydraulic cylinder and are designed to help prevent dirt, dust, mud, moisture and other contamination from being carried into the cylinder as the rod retracts.
DKB-style wipers commonly incorporate a flexible wiping element with a metal support case, providing secure retention and a robust design for demanding hydraulic applications. Australian suppliers describe DKB profiles as metal-cased wipers for medium-to-heavy-duty service, with nitrile or polyurethane wiping elements.
Typical applications include:
- Hydraulic cylinders
- Excavators
- Loaders
- Bulldozers
- Mining machinery
- Dump trucks
- Agricultural equipment
- Forklifts
- Material handling equipment
- Mobile hydraulic machinery
Your supplier’s market guide specifically positions DKB/DKBI seals for Caterpillar, Komatsu and Hitachi-style heavy earthmoving applications and hydraulic cylinders.
Typical example sizes:
- DKB 80 × 94 × 9/12 mm
- DKB 100 × 114 × 9/12 mm
- Additional metric profiles
Cassette Oil Seals
Cassette seals are integrated rotary sealing assemblies designed for heavy-duty applications where lubricant retention and contamination exclusion are both important.
Unlike a simple radial oil seal, cassette seals can incorporate multiple sealing and exclusion elements within one assembled unit.
Depending on the design, a cassette seal may include:
- Primary lubricant sealing lip
- Secondary dust or exclusion lips
- Integrated running surface
- Metal support structure
- Elastomer sealing elements
- Multi-stage contamination barriers
This construction makes cassette seals particularly useful in exposed wheel-end and axle applications where the sealing area may encounter dust, water, road grit, mud and abrasive contamination.
Australian sealing suppliers specifically promote cassette and mudblock-type seals for tractors, agricultural machinery, construction vehicles, forklifts, forestry equipment and planetary gearboxes.
Typical applications include:
- Heavy truck wheel hubs
- Axles
- Tractor wheel ends
- Construction machinery
- Agricultural equipment
- Mining vehicles
- Forestry machinery
- Final drives
- Off-highway equipment
- Planetary gearboxes
Combi Oil & Axle Seals
Combi seals are designed for rotary applications where both lubricant retention and enhanced protection against external contamination are required.
These seals are frequently used in agricultural and off-highway machinery because wheel ends and axles can operate in highly contaminated environments.
Typical exposure may include:
- Soil
- Mud
- Water
- Dust
- Crop residue
- Road debris
- Fine abrasive particles
A Combi seal provides an additional protective arrangement around the primary oil-sealing section, helping isolate the main sealing lip from the surrounding environment.
Australian seal suppliers group Combi seals with cassette and mudblock-style products for heavy-contamination wheel-end applications.
Typical applications include:
- Tractor axles
- Agricultural machinery
- Front axle assemblies
- Rear axle assemblies
- Wheel hubs
- Construction equipment
- Forklifts
- Forestry machinery
- Off-highway equipment
- Final drives
- Transmission systems
Your supplier specifically identifies Carraro and Dana axle applications and agricultural machinery associated with John Deere, Case IH, New Holland and CLAAS.
Typical example sizes:
- 130 × 160 × 14.5/16 mm
- 140 × 170 × 14.5/16 mm
- PTO 45 × 65 × 18 mm
TA & TB Rotary Oil Seals
TA and TB oil seals are rotary shaft sealing profiles used to retain lubricants around rotating shafts while helping protect equipment from external contamination.
Rotary shaft seals are commonly found throughout industrial machinery and mechanical drive systems.
Depending on the exact profile, a TA or TB oil seal may include:
- Primary radial sealing lip
- Garter spring
- Secondary dust lip
- Reinforced metal case
- Rubber or metal outside diameter
They are used where a rotating shaft passes through a stationary housing and lubricant must be retained inside the equipment.
Typical applications include:
- Gearboxes
- Pumps
- Electric motors
- Industrial machinery
- Conveyors
- Agricultural equipment
- Mining equipment
- Processing machinery
- Power transmission systems
- Hydraulic power units
- Mechanical drives
Your supplier’s guide positions TA/TB seals for mineral processing plants, pumps, gearboxes and industrial processing equipment.
Typical example size:
- TA 50 × 72 × 12 mm
Industrial Seal Applications
Industrial seals are used throughout equipment where moving components must be protected from leakage, contamination or both.
Hydraulic Cylinders
Hydraulic cylinders typically use multiple sealing elements working together.
These can include:
- Rod seals
- Piston seals
- Wiper seals
- Guide rings
- Wear rings
- O-rings
- Back-up rings
The external wiper is particularly important because it forms the first barrier against contaminants entering the cylinder.
DKB and DKBI profiles are commonly selected for this function.
Rotating Shafts
Rotating shafts require sealing arrangements that maintain controlled contact with the shaft surface while retaining oil or grease.
Applications can include:
- Gearboxes
- Pumps
- Motors
- Bearings
- Mechanical drives
- Transmission equipment
TA and TB-style rotary shaft seals are typically used within this group.
Wheel Hubs & Axles
Wheel ends and axle systems can experience long operating periods and significant exposure to environmental contaminants.
Heavy-duty applications may involve:
- Dust
- Mud
- Water
- Heat
- Vibration
- Grease
- Gear oil
- Continuous operation
Cassette and Combi seals are designed specifically for applications where a conventional basic oil seal may not provide enough contamination protection.
Australian suppliers identify off-highway wheel-end contamination and lubricant loss as important causes of bearing damage and maintenance problems.
Industrial Seals for Australian Industries
Mining & Earthmoving
Mining and earthmoving equipment operates under severe contamination and high utilisation.
Seal applications can include:
- Excavator hydraulic cylinders
- Dump truck cylinders
- Loader hydraulics
- Final drives
- Wheel hubs
- Gearboxes
- Pumps
- Processing equipment
Suitable seal types may include:
- DKB/DKBI wiper seals
- Cassette seals
- Rotary oil seals
- Hydraulic seals
- PTFE seals
- O-rings
Agriculture
Agricultural machinery frequently operates in environments containing dust, mud, water, soil and crop residue.
Typical sealing applications include:
- Tractor axles
- Wheel hubs
- PTO shafts
- Hydraulic cylinders
- Harvesting equipment
- Final drives
- Gearboxes
Combi and cassette seals are particularly relevant to agricultural wheel-end and axle applications. Australian suppliers list these styles for tractors and agricultural machines, including heavy-contamination applications.
Heavy Transport
Commercial transport equipment depends on reliable wheel-end and driveline sealing.
Applications may include:
- Truck hubs
- Trailer hubs
- Drive axles
- Steer axles
- Gearboxes
- Driveline equipment
Cassette seals are commonly used where wheel-end sealing requires additional protection from contamination and lubricant loss.
Construction & Off-Highway Equipment
Construction machinery combines hydraulic and rotary sealing applications within the same machine.
Typical equipment includes:
- Excavators
- Loaders
- Graders
- Forklifts
- Telehandlers
- Compactors
- Mobile plant
Different locations within the equipment may require DKB wipers, rotary shaft seals, cassette seals or Combi seals.
Manufacturing & Industrial Processing
Industrial machinery uses rotary seals across:
- Pumps
- Gearboxes
- Motors
- Agitators
- Conveyors
- Mechanical drives
- Processing equipment
TA/TB oil seals and other rotary shaft seals are commonly selected for these applications.
Common Industrial Seal Materials
Seal performance depends heavily on selecting a material suited to the fluid, temperature and operating environment.
NBR – Nitrile Rubber
Nitrile rubber is widely used in industrial oil sealing applications.
Typical characteristics include:
- Good resistance to mineral oils
- Good resistance to grease
- Good mechanical properties
- Suitable for many general industrial applications
- Cost-effective sealing performance
NBR is commonly used in rotary oil seals, cassette seals and hydraulic sealing components.
HNBR – Hydrogenated Nitrile Rubber
HNBR offers improved performance compared with conventional NBR in applications requiring greater resistance to:
- Heat
- Mechanical stress
- Ozone
- Ageing
It may be used in more demanding heavy-duty rotary sealing applications.
FKM – Fluoroelastomer
FKM is commonly selected when the application requires improved resistance to:
- Elevated temperatures
- Oils
- Fuels
- Many chemicals
- More demanding industrial service
Material suitability should always be confirmed against the actual fluid and operating conditions.
Polyurethane – PU
Polyurethane is widely used in hydraulic sealing systems because of its excellent mechanical characteristics.
Typical advantages include:
- High abrasion resistance
- Good tear resistance
- High mechanical strength
- Good resistance to wear
- Suitability for demanding reciprocating applications
PU is commonly used for DKB/DKBI-style wiper elements.
Freudenberg’s Australian DKB range includes polyurethane and nitrile versions with mild-steel support cases.
PTFE
PTFE is used for specialised sealing applications where characteristics such as low friction, chemical resistance and temperature capability are important.
PTFE may be used in:
- Rotary seals
- Piston seals
- Spring-energised seals
- High-performance industrial sealing systems
Choosing the Correct Industrial Seal
Correct seal selection depends on several operating factors.
Seal Dimensions
Important dimensions can include:
- Shaft or rod diameter
- Housing bore
- Seal outside diameter
- Seal width
- Groove dimensions
- Overall profile height
Type of Movement
The first question is whether the application involves:
Linear / reciprocating movement
Typical example: hydraulic cylinder.
or
Rotary movement
Typical example: gearbox or axle shaft.
The seal designs required for these applications are very different.
Fluid or Lubricant
Consider the actual medium contacting the seal.
Examples include:
- Hydraulic oil
- Gear oil
- Grease
- Mineral oil
- Water/glycol hydraulic fluids
- Process fluids
Material compatibility should be verified for the intended medium.
Temperature
Operating temperature can influence:
- Elastomer selection
- Seal hardness
- Lip wear
- Service performance
Higher-temperature applications may require different compounds from standard general-purpose NBR.
Shaft or Rod Speed
Rotary shaft speed affects friction and heat generated at the sealing lip.
Hydraulic rod velocity can likewise influence wiper and rod-seal behaviour.
Contamination Level
Equipment operating indoors in a clean factory may have very different sealing requirements from:
- Mining equipment
- Agricultural machinery
- Quarry plant
- Forestry machinery
- Earthmoving equipment
Where contamination is severe, additional exclusion lips or heavy-duty seal designs may be appropriate.
Understanding Industrial Seal Dimensions
Many seals are identified using the format:
I × D × B
where:
I = inside diameter / shaft or rod diameter
D = outside diameter / housing diameter
B = width or height
For example:
50 × 72 × 12 mm
generally represents:
- 50 mm shaft diameter
- 72 mm outside diameter
- 12 mm width
Some hydraulic wipers use stepped dimensions.
For example:
80 × 94 × 9/12 mm
can indicate:
- 80 mm rod diameter
- 94 mm housing diameter
- 9 mm installed section
- 12 mm overall profile height
Always check the actual seal profile because dimension notation can vary between manufacturers.
Seal Identification by Part Number, Dimensions or Sample
One of the biggest problems with replacement seals is that customers often know what machine the seal came from but not what type of seal it is.
Industrial Experts can assist with identification using information such as:
- Manufacturer part number
- OEM number
- Seal markings
- Shaft or rod diameter
- Housing diameter
- Width or height
- Equipment manufacturer
- Equipment model
- Axle model
- Existing seal sample
- Clear photographs
For difficult applications, photos of both sides of the seal and any moulded numbers can be particularly useful.
Common Information to Provide When Requesting an Industrial Seal
To help identify the correct product, provide as much information as possible:
| Information | Example |
|---|---|
| Seal type | DKB / Cassette / Combi / TA |
| Part number | 370001A |
| Inside diameter | 80 mm |
| Outside diameter | 94 mm |
| Width / Height | 9/12 mm |
| Material | PU / NBR / FKM |
| Equipment | Excavator |
| Manufacturer | Komatsu |
| Equipment model | If known |
| Application | Hydraulic cylinder |
| Quantity | Required quantity |
If some information is unknown, provide the dimensions and photographs you have.
Why Seal Profile Matters
Two seals can have identical outside dimensions but perform completely different functions.
For example:
- A hydraulic wiper removes contamination from a reciprocating rod.
- A rotary oil seal retains lubricant around a rotating shaft.
- A Combi seal combines lubricant retention with additional contamination exclusion.
- A cassette seal integrates several sealing functions into a single assembly.
For this reason, selecting a replacement purely by diameter and width can sometimes result in the wrong seal being used.
Whenever possible, the profile, material and application should be confirmed along with the dimensions.
Frequently Asked Questions
What types of industrial seals does Industrial Experts supply?
Our industrial seal range includes DKB and DKBI hydraulic wiper seals, cassette oil seals, Combi axle seals, TA/TB rotary shaft seals and other industrial sealing products.
What is the difference between a hydraulic seal and an oil seal?
Hydraulic seals are generally designed around reciprocating components such as piston rods and pistons.
Oil seals, or rotary shaft seals, normally seal around rotating shafts used in equipment such as gearboxes, pumps and axles.
What is a wiper seal?
A wiper seal is installed at the exposed end of a hydraulic cylinder. It wipes contamination from the rod as the rod retracts.
DKB and DKBI seals are examples of hydraulic wiper profiles.
What is the difference between a cassette seal and a standard oil seal?
A standard oil seal normally contains a relatively simple radial sealing arrangement.
A cassette seal is an integrated assembly that can contain multiple sealing, exclusion and running-surface components, making it suitable for demanding wheel-end and axle applications.
Where are Combi seals commonly used?
Combi seals are commonly found in agricultural, off-highway and heavy-equipment axle applications where external contamination is significant.
Australian suppliers specifically list these heavy-duty styles for tractors, agricultural machinery and construction vehicles.
What information is needed to identify an industrial seal?
Ideally provide:
- Part number
- Inside diameter
- Outside diameter
- Width or height
- Seal profile
- Material
- Equipment details
- Photos
Even if the part number is unknown, dimensions and a clear photograph can often help narrow down the seal type.
Can seals be identified from an existing sample?
Yes. Existing seal markings, dimensions, profile shape and equipment details can all assist with identification.
Industrial Sealing Solutions for Australian Industry
Industrial Experts supports customers across Australia with sealing products for maintenance, repair, equipment rebuilds and industrial applications.
Our industrial seal range complements our existing capabilities in:
- Custom-cut gaskets
- Rubber sealing products
- PTFE products
- O-rings
- Gasket materials
- Industrial sealing components
This allows customers to source multiple sealing requirements through one supplier, from custom flat gaskets through to hydraulic and rotary sealing products.
Need Help Identifying a Seal?
Send us the part number, dimensions, equipment information or photographs of the existing seal, and we can assist with identifying the appropriate seal profile for your application.
No datasheets available.
