Machined Mining Seals

Profile

Name

Operating Range

Summary

The AB02B Wiper Seal is recommended for heavy duty applications where possible contaminants such as mud or ice may be present. The seal is designed with both pre-load and a sealing lip on the outside diameter. This external sealing lip helps prevent debris and moisture travelling behind the static diameter of the groove and entering the system. The AB02B is a good choice for applications where cylinders are working in a vertical position as moisture tends to gather in the wiper gland area in these circumstances.

AB02B is normally manufactured in hard grade PU materials for extra abrasion resistance and naturally has a heavy load to provide a positive scraping action which is normally required in heavy duty applications such as those mentioned above.

AB12 is a premium flexible snap-fit Wiper Seal which is commonly referred to as ‘the mining wiper’ because it has been designed to work in heavy duty safety critical environments where system contamination is unacceptable.

The special snap in design provides pre-load over the outside diameter of the groove which ensures no rolling or movement while in operation and the extending flange protruding from the scraping lip covers the housing to help prevent debris and moisture from gathering or entering into the seal groove, this is especially useful for hydraulic cylinders operating vertically.

Hard PU grades are commonly used for their abrasion resistance and excellent scraping ability.

AB13 is commonly used in tandem with other wiper seals to provide extra protection from external contamination or can be used on its own where groove space is restricted.

The AB13 is normally produced in either hard grade engineering plastics such as Nylon or hard grade PU materials.

On occasions the AB13 may have to be split to enable installation into the groove. The selection of a hard grade PU material can sometimes avoid this.

The AB14 is an excellent heavy-duty clip-fit scraper seal and is recommended when the scraping of abrasive particles from the shaft is required. The groove design for the AB14 is simple which means machining of the metal carrier is quick and most of all economical.

Installation of the AB14 is done by simply pressing the heel down into the retaining groove, the outer seal lip then simply folds over before simply clicking back into position, retaining the wiper in place while also preventing the ingress of any contamination into the system through the outside diameter of the gland.

Standard material is lubricated Nylon, but other high-performance materials are available if required.

AB29 Profile is a further modification on the industry standard flexible snap-fit wiper seal.

The seal is produced with interference across the outside diameter providing the snap-fit to keep it stable in the groove while the piston rod is reciprocating. The extra sealing edge toward the outside diameter provides security against foreign particles making their way behind the seal while providing excellent moisture protection.

The seal is manufactured with a stabilizing heel that sits against the shaft and prevents seal movement and tilting when under side-load. This heel is also slotted to prevent pressure build-up in between the rod seal.

Standard material is PU although it can easily be manufactured in a high-performance elastomer if the application requires.

FB01 profile is a tight tolerance guide ring / wear ring which can be manufactured from a number of our high-performance thermoplastic materials to provide precise clearance control of mating metallic hardware members in fluid power or pneumatic systems.

The tight tolerance control on the FB01 profile ensures excellent bearing contact which helps minimise and control misalignment while the piston or rod is under static or dynamic load which helps significantly increase seal life when compared to high volume moulded rings.

FB01 is supplied either in solid format or split for ease of installation and can be supplied with spiral grooves on the main contact surface to prevent entrapped pressure between the seal and the guide ring itself. The addition of these grooves can also help eliminate jet-erosion, which is where the high-pressure fluid of the hydraulic system is forced through the localised split in the ring and damages the seal.

Please contact our technical department for further information on the correct material choice for your application.

FB07 profile is a tight tolerance ‘U’ shaped piston guide ring / wear ring which is produced with additional retaining lugs which help prevent axial movement while the piston is reciprocating under pressure. These retaining lugs can also help retain the ring when it may be required to pass over an inlet port.

Profile FB07 can be manufactured from several of our high-performance thermoplastic materials to provide precise clearance control of mating metallic hardware members in fluid power or pneumatic systems. The tight tolerance control on this profile ensures excellent bearing contact which helps minimise and control misalignment while the piston is under static or dynamic load which helps to significantly increase seal life when compared to high volume moulded rings.

This profile is provided split for ease of installation and is commonly utilised in tandem alongside our double acting (bi-directional) piston seal KB08E for heavy duty long stroke applications.

Profile FB07 can be supplied with spiral grooves on the main contact surface to prevent entrapped pressure between the seal and the guide ring itself. The addition of these grooves can also help eliminate jet -erosion, which is where the high-pressure fluid of the hydraulic system is forced through the localised split in the ring and damages the seal.

Please contact our technical department for further information on the correct material choice for your application.

The FB08 profile is a tight tolerance ‘U’ shaped rod working guide ring / wear ring which is produced with additional retaining lugs which helps prevent axial movement while the rod is reciprocating under pressure.

Profile FB08 can be manufactured from several of our high-performance thermoplastic materials to provide precise clearance control of mating metallic hardware members in fluid power or pneumatic systems. The tight tolerance control on this profile ensures excellent bearing contact which helps minimise and control misalignment while the piston is under static or dynamic load which helps to significantly increase seal life when compared to high volume moulded rings.

This profile is provided split for ease of installation and is commonly utilised for use as a combined guide ring and back-up ring for rod seals working in heavy duty applications where metalwork clearance gaps need to be quite large. It can be supplied with spiral grooves on the main contact surface to prevent entrapped pressure between the seal and the guide ring itself. The addition of these grooves can also help eliminate jet -erosion, which is where the high-pressure fluid of the hydraulic system is forced through the localised split in the ring and damages the seal.

Please contact our technical department for further information on the correct material choice for your application.

FB09 profile is a modification of our standard FB08 rod working guide ring which incorporates a scraping / wiping edge on the non-pressure side to allow it to be utilised in heavy duty applications where the removal of heavy particles of mud or ice may be present.

As per our FB08 guide ring the FB09 is a tight tolerance ‘U’ shaped rod working guide ring / wear ring which is produced with additional retaining lugs to help prevent axial movement while the rod is reciprocating under pressure. It can be manufactured from several of our high-performance thermoplastic materials to provide precise clearance control of mating metallic hardware members in fluid power or pneumatic systems. The tight tolerance control ensures excellent bearing contact which helps minimise and control misalignment while the piston is under static or dynamic load which helps to significantly increase seal life when compared to high volume moulded rings.

This profile is provided split for ease of installation and is commonly utilised in multistage hydraulic rams where space is limited and where metalwork clearance gaps need to be quite large.

Please contact our technical department for further information on the correct material choice for your application.

Our KB03A profile is an asymmetric single acting / uni-directional hydraulic piston u-cup seal complete with both an O-Ring energizer and multiple sealing lips. The O-Ring energiser helps sealing at low pressures, while the multiple sealing lips provide some sealing redundancy and lubrication reservoirs to help reduce friction in dynamic applications.

This seal has been used with great success as a replacement for static O-Rings that may see occasional dynamic movement and can be manufactured to suit most internationally recognised O-Ring groove sizes.

It is available in several of M Seals’s high performance materials to provide increased extrusion resistance, low compression set and outstanding wear prorerties.

The KB04 profile is a modification of both the KB02 and KB03 profiles. The inclusion of the pressure activated back-up ring offers extrusion resistance and ensures safe use at higher pressures.

The use of the KB04 profile also allows the design engineer to use larger radial clearances where metal to metal contact must be avoided in applications that may have potential side-load/misalignment issues.

The O-Ring energizer offers increased sealing ability in low pressure or soft start systems where standard rod seals would allow low pressure fluid bypass.

Designed for use on one-piece solid pistons the KB09D is a modification of our KB09C profile, commonly used in hydraulic cylinders found in off-highway applications.

It is a double acting/bi-directional piston seal comprising of a central elastomeric sealing element and precision machined thermoplastic back-up rings which are split to allow assembly onto the solid piston.

The central sealing element provides initial radial compression upon installation to provide low pressure sealing, when subjected to system pressure the seal energises to provide further compressive force and leak tightness.

Designed for use on one-piece solid pistons the KB09E is a 6-piece double acting/bi-directional heavy-duty piston seal.

The seal is commonly used in large diameter, long-stroke applications that have high bearing loads and require larger clearance gaps between the hardware components to prevent metal-to-metal contact.

The central sealing element is energised by the elastomer ring which provides initial radial compression upon installation to provide low pressure sealing, when subjected to system pressure the seal energises to provide further compressive force and leak tightness. While offering extrusion resistance the guide rings also support and centralise the piston head while reciprocating in the hydraulic cylinder and help prevent metal to metal contact under side load conditions

The KB09A can be offered in several material combinations for use in high temperatures and/or to provide enhanced chemical resistance.

Designed for use on one-piece solid pistons and commonly used in mobile hydraulics in machinery such as excavators, the KB23 is a 4-piece double acting/bi-directional piston seal comprising of a central polyurethane sealing element, elastomeric energising ring and precision machined thermoplastic guide rings which are split to allow assembly onto the solid piston.

The precision machined back-up rings allow higher working pressures and larger clearance gaps between the hardware components.

The central polyurethane sealing element is energised by the elastomer ring which provides initial radial compression upon installation to provide low pressure sealing, when subjected to system pressure the seal energises to provide further compressive force and leak tightness.

The KB23 requires guide/wear rings to be placed either side of the seal to keep the piston centralised in the cylinder bore while reciprocating under system pressure.

Designed for use on one-piece solid pistons the KB23B is a high-pressure modification of our standard KB23 profile.
Like its sister product It is a 4-piece double acting/bi-directional piston seal comprising of a central polyurethane sealing element, elastomeric energising ring and precision machined thermoplastic back-up rings which are split to allow assembly onto the solid piston.

The precision machined back-up rings allow higher working pressures and larger clearance gaps between the hardware components and wrap around the sidewalls of the seal for protection.

The central sealing element is energised by the elastomer ring which provides initial radial compression upon installation to provide low pressure sealing, when subjected to system pressure the seal energises to provide further compressive force and leak tightness.

The simple O-Ring is one of the oldest and most trusted static sealing methods available.

M Seals can manufacture O-Rings ‘flash-free’ on the outside and inside diameter contact points helping to provide leak-free performance in radial sealing applications.

We manufacture Rubber O-Rings, Polyurethane O-Rings, PTFE O-Rings and O-Rings for rapid gas decompression resistance in one of our Norsok compliant RGD / ED resistant materials.

Our RB14 is a simple square section or rectangular profile used for economical sealing of SAE flanges for both internal and external pressure (confirmation of the pressure direction is required). It provides good low-pressure sealing efficiency up to 100 Bar which can be increased through the correct choice of back-up ring.

While being economical it isn’t the most robust seal for flange sealing, talk to our technical department about the best choice of seal for your application.

Our SB18 profile is an asymmetric single acting / uni-directional hydraulic rod u-cup seal complete with a secondary sealing lip and an O-Ring energizer which is recommended for low pressures, soft start systems or applications where leak free tightness is paramount above all else.

The O-Ring energiser in this seal provides further sealing force across the sealing lips to ensure leak free performance even at low or zero pressure. The seal has a shortened dynamic lip for improved low friction and has an interference fit along its outside diameter to ensure a stable fit in the housing and to provide a tight leak free static seal. The secondary sealing lip not only provides redundant sealing behind the primary sealing lip, but also helps retain initial installation lubrication creating a reservoir between the pair of the sealing lips. This lubrication reservoir helps prevent dry running and greatly reduces seal wear.

Our SB18A profile is a modification of the standard SB18 O-Ring energised U-Cup seals profile and includes a secondary sealing lip on both its inside and outside diameters.

The O-Ring energiser in this seal provides further sealing force across the sealing lips to ensure leak free performance even at low or zero pressure. The seal has a shortened dynamic lip for improved low friction and has an interference fit along its outside diameter to ensure a stable fit in the housing and to provide a tight leak free static seal. The secondary sealing lips not only provide redundant sealing behind the primary sealing lips, but also help retain initial installation lubrication creating a reservoir between the pair of the sealing lips. This lubrication reservoir helps prevent dry running and greatly reduces seal wear.

The secondary sealing lip on the outside diameter prevents bypass through the gland O.D. and is also useful at preventing moisture from entering the system from the non-pressure side, something which is very useful when sealing hydraulic cylinders operating in vertical applications.

Commonly used in heavy duty agricultural, mobile plant and mining hydraulic applications, the SB24 is the first-choice rod seal where harsh operating conditions exist or where extreme pressure spikes exist in hydraulic systems.

The SB24 is a hybrid seal which takes the designs of various seals to provide a complete all-round performer which is capable in almost all situations that may arise in a hydraulic application.

The seal is energised by an O-Ring to provide superior low-pressure leakage performance while offering a secondary lip for redundant sealing. This secondary sealing lip creates a cavity towards the centre of the seal which retains initial installation lubrication, this prevents dry-running and vastly decreases seal wear which in-turn increases seal life. The inclusion of a Back-Up ring allows the seal to work at very high pressures or in applications where the clearance gap needs to be larger than that suggested for standard rod seal designs.

SB24 can be used in tandem with one of our buffer seal designs should this device be required and is available in a vast choice of materials to suit your application requirements.

Commonly used in the mining industry in vertical hydraulic cylinder applications, the SB24A is the first-choice rod seal where harsh operating conditions and/or where extreme pressure spikes exist in hydraulic systems.

The SB24A is a hybrid seal which takes the designs of various seals to provide a complete all-round performer which is capable in almost all situations that may arise in a hydraulic application.

The seal is energised by an O-Ring to provide superior low-pressure leakage performance while offering secondary lipS for redundant sealing. The secondary sealing lips create a cavity towards the centre of the seal which retains initial installation lubrication, this prevents dry-running and vastly decreases seal wear which in-turn increases seal life. The inclusion of a Back-Up ring allows the seal to work at very high pressures or in applications where the clearance gap needs to larger than that suggested for standard rod seal designs.

The secondary sealing lip on the outside diameter prevents bypass through the gland O.D. and is also useful at preventing moisture from entering the system from the non-pressure side, something which is very useful when sealing hydraulic cylinders operating in vertical applications.

SS01 profile is a static O-Ring and Back-up Ring replacement seal. It is used where the installation of 2 back-up rings and an O-Ring are problematic and time consuming. The tapered sealing points allow easier installation into the mating hardware and the dual contact points offer a degree of sealing redundancy. It has excellent resistance to pulsating pressures and does not roll or twist in the groove due its excellent stability.

Commonly used on cartridge valves up to 400 Bar and higher through the correct choice of polyurethane material, it is an economical choice where O-Rings are routinely damaged at the installation stage and a more stable abrasion and tear resistant seal is required.

The STB08 profile is a simple endless / solid back-up ring design, but it is a precision machined component that is used to protect O-Rings and other static and dynamic seals where system pressures are greater than the capabilities of the seal alone or where high temperatures and excessive clearance / extrusion gaps are present.

The STB08 is available to suit all standard O-Ring gland sizes including BS1806, BS4518, AS568, ISO3601, JISB2401, MS27595 and almost any custom size you may require.

This part is available in many of our PTFE, Fluoropolymer, thermoplastic and thermoplastic elastomer materials to suit every application, talk to our technical team to discuss your requirements.

The STB09 profile is an endless / solid back-up ring design that is precision machined and used to protect O-Rings and other dynamic seals where system pressures are greater than the capabilities of the seal alone or where high temperatures and excessive clearance / extrusion gaps are present.

The STB09 is available to suit the following standard O-Ring gland sizes including BS1806, BS4518, AS568, ISO3601 and almost any custom sizes you may require.

This back-up ring is often used in the oil and gas industry where high pressure / high temperature (HPHT) applications exist.

This part is available in many of our PTFE, Fluoropolymer, thermoplastic and thermoplastic elastomer materials to suit every application, talk to our technical team to discuss your requirements.