► Finer | BS Series - Viton

High-Performance Sealing for Chemical, Hydraulic & High-Temperature Applications

When standard rubber seals can't handle the heat or harsh chemicals, choosing the right O-ring becomes critical. Equipment operating under elevated temperatures, aggressive chemicals or demanding hydraulic conditions requires sealing materials that maintain their integrity without hardening, swelling or deteriorating over time.

Finer BS Series Viton O-Rings are manufactured to British Standard (BS) sizing & engineered from premium Viton® fluoroelastomer (FKM) to provide reliable sealing performance across demanding industrial applications. Known for their excellent resistance to heat, fuels, oils, hydraulic fluids & many chemicals, these precision O-rings are widely used in hydraulic systems, pneumatic equipment, pumps, valves, automotive components, agricultural machinery & industrial processing equipment.

Available in a comprehensive range of BS sizes, these high-performance sealing rings are suitable for static & dynamic sealing applications where conventional nitrile (NBR) or EPDM O-rings may not provide sufficient chemical or temperature resistance.

Unlike general-purpose rubber seals, Viton O-rings are specifically selected for applications exposed to elevated operating temperatures, petroleum-based fluids, synthetic lubricants, diesel, petrol, solvents & many industrial chemicals. Their superior durability helps minimise leaks, reduce maintenance requirements & improve equipment reliability in harsh operating environments.

For complete sealing & maintenance solutions, Finer BS Series Viton O-Rings complement Finer O-Rings & Seals, Hydraulic Components, Lubricants for assembly where appropriate & Boston Cleaners & Degreasers for preparing sealing surfaces before installation.

Why Choose Finer BS Series Viton O-Rings?

Not all elastomers perform equally under demanding operating conditions. While standard sealing materials work well in general applications, exposure to high temperatures, aggressive chemicals or petroleum-based fluids can significantly reduce their service life.

Finer BS Series Viton O-Rings are designed for applications where durability, chemical compatibility & long-term sealing performance are essential.

Key Benefits

► Manufactured from premium Viton® (FKM) fluoroelastomer
► British Standard (BS) sizing for broad equipment compatibility
► Excellent resistance to oils, fuels & hydraulic fluids
► Suitable for elevated operating temperatures
► Resists many industrial chemicals & solvents
► Helps minimise leakage in demanding sealing applications
► Suitable for static & dynamic sealing systems
► Long service life in harsh industrial environments
► Ideal for hydraulic, pneumatic, automotive & processing equipment

Compared with standard nitrile seals, Viton O-rings provide significantly greater resistance to heat, oxidation & many aggressive fluids, making them a preferred sealing solution where equipment reliability is critical.

Routine maintenance should always include cleaning sealing grooves & mating surfaces before installation. Using Boston Cleaners & Degreasers before replacing seals helps remove contamination that could compromise sealing performance, while compatible Lubricants can assist with assembly where recommended by the equipment manufacturer.

Common Applications

Hydraulic Equipment

Hydraulic systems rely on precision sealing to maintain pressure & prevent costly fluid loss.

Common applications include:

► Hydraulic cylinders
► Control valves
► Hydraulic pumps
► Manifolds
► Pressure fittings
► Agricultural hydraulics
► Mobile plant equipment
► Industrial hydraulic systems

Chemical Processing

Viton's excellent chemical resistance makes these O-rings suitable for demanding industrial processing environments.

Frequently used in:

► Chemical transfer systems
► Dosing equipment
► Processing pumps
► Industrial valves
► Mixing equipment
► Fluid handling systems
► Filtration equipment
► Manufacturing plants

Automotive & Transport

Modern vehicles operate with high temperatures & aggressive fluids that require durable sealing materials.

Suitable for:

► Fuel systems
► Engine components
► Transmission assemblies
► Power steering systems
► Air conditioning system
► Turbocharger plumbing
► Fuel injectors
► Oil filtration systems

Agriculture & Heavy Equipment

Agricultural machinery regularly operates under heavy loads while being exposed to heat, dust & hydraulic fluids.

Ideal for:

► Tractors
► Harvesters
► Sprayers
► Loaders
► Excavators
► Irrigation equipment
► Hydraulic implements
► Earthmoving machinery

Industrial Manufacturing

Reliable sealing is essential for maintaining productivity across automated manufacturing equipment.

Commonly installed in:

► Pneumatic equipment
► Industrial pumps
► Compressors
► Conveyor systems
► Packaging machinery
► Robotics
► Automated production equipment
► Material handling systems

Oil, Gas & Mining Support Equipment

High temperatures, pressure & aggressive fluids make premium sealing materials essential.

Frequently used on:
► Fuel handling equipment
► Lubrication systems
► Process equipment|
► Mining machinery
► Compressor systems
► Heavy-duty pumping equipment
► Industrial processing plants
► Maintenance workshops

Selecting the Correct BS Series Viton O-Ring

Choosing the correct seal involves more than simply matching the diameter. Consider the operating environment, media compatibility & pressure requirements before selecting an O-ring.

Before ordering, confirm:

► British Standard (BS) size
► Internal diameter
► Cross-section thickness
► Operating temperature
► Chemical compatibility
► Pressure requirements
► Dynamic or static application
► Groove dimensions
► Fluid compatibility
► Equipment manufacturer specifications

A correctly specified Viton O-ring helps maximise sealing performance while reducing premature wear, leakage & unexpected equipment downtime.

Product Selection Guide

Selecting the right O-ring is essential for achieving a reliable seal & maximising equipment performance. While the correct BS size is critical, it's equally important to consider operating temperature, chemical compatibility, pressure & the type of media the seal will be exposed to. Choosing the appropriate Viton O-ring helps reduce fluid leaks, minimise maintenance & improve equipment reliability.

Before fitting a replacement seal, use Boston Cleaners & Degreasers to remove oil, grease & residue from sealing surfaces. Where recommended by the equipment manufacturer, apply a compatible Lubricant to assist installation & reduce the risk of twisting or pinching the O-ring.

Expert Tips

Even premium Viton O-rings can fail prematurely if they're incorrectly selected or installed. Taking a little extra care during maintenance helps maximise sealing performance & reduce costly equipment downtime.

► Always confirm the correct British Standard (BS) size before installation.
► Check that the sealing groove is clean, smooth & free from burrs or corrosion.
► Never stretch an O-ring beyond its recommended installation limits.
► Avoid using sharp tools that may nick or scratch the sealing surface.
► Replace seals that show cracking, flattening, swelling or chemical attack.
► Confirm the sealing material is compatible with the operating fluid before installation.
► Avoid mixing different elastomer materials within the same sealing assembly unless specified by the equipment manufacturer.
► Inspect shafts, pistons & sealing surfaces for wear that may cause repeated seal failures.
► Store spare O-rings in a cool, dry location away from direct sunlight, ozone & excessive heat to preserve elastomer properties.

Proper seal selection, installation & routine inspection can significantly improve equipment reliability while reducing fluid loss, contamination & unnecessary maintenance.