WIPER SEALS

 

One of the largest causes of damage and failure in a hydraulic system is contamination from external sources; therefore, the correct choice of Wiper Seal should be considered a priority for the design engineer or RAM repairer. The main function of a Wiper Seal as its name suggests is to wipe or scrape debris from the piston rod to prevent foreign particles such as dust, mud, sand and moisture from entering the sealing system. By preventing this ingress, wiper seals prevent possible scratches and damage occurring to the piston rod and cylinder bore which thoroughly extends the working life and leak-free performance of the other sealing components in the hydraulic or pneumatic system.

DMR provide Wiper Seals to suit all applications, if you require a reliable solution to your contamination problems then we have the solution.

IMPORTANT - Please Note: The data shown below are maximum values and operating ranges and cannot be used at the same time.

For example: The maximum operating speed will depend on material type chosen, working pressure, application temperature and clearance gap values.  The temperature range shown is also dependent on choice of material and media to be sealed.

Product Range

ProfileNameOperating RangeSummary
AB01
AB01 Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB01 (commonly referred to as a 3-step wiper) is an economical flexible Snap-Fit wiper seal for light to medium duty applications which is designed to fit into a stepped housing. The additional shoulder/step provides improved exclusion of dirt and other debris around the outside diameter of the gland. Pre-load …Read More
AB02
AB02 Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB02 Wiper Seal is an economical and industry standard excluder. The precision machined scraping lip ensures excellent debris removal from the shaft and exclusion of external system debris from the system. The AB02 comes with pre-load on the outside diameter to provide stability and prevent rolling in the groove …Read More
AB02A
AB02A Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB02A profile has an interference fit on the outside diameter which provides stability in the seal groove and helps to prevent possible movement and roll when the shaft reciprocates. The plunged radius in the shoulder provides the precision machined scraping lip with increased flexibility over other standard wiper seals …Read More
AB02B
AB02B Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
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 …Read More
AB02C
AB02C Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
Our AB02C Wiper Seal is based on our standard AB02 profile but has been modified for external scraping of cylinder bores. This profile is commonly used in subsea applications where protection of the main piston seal from external contamination such as sand and silt may be required. This seal should …Read More
AB03
AB03Temperature Min: -55°C Max: 210°C
Speed Max: 5 m/s
Press fit wiper (hydraulic) designed for open housings. It has a precision machined wiping lip to ensure a good wiping effect and exclusion of external system debris. Standard materials are PU wiping lip and POM outer case for ease of installation and good retention within the housing. Only recommended for …Read More
AB04
AB04 Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB04 is a flexible Snap-fit (3 step) wiper seal that has been optimised for pneumatic applications. The seal has tight fit in the groove across the outside diameter to help prevent rolling and a precision machined scraping lip which has a radiused contact point to allow the retention of …Read More
AB05
AB05 Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB05 is a flexible Snap-fit wiper seal that has been optimised for pneumatic applications. The seal has tight fit in the groove across the outside diameter to help prevent rolling and a precision machined scraping lip which has a radiused contact point to allow the retention of initial lubrication …Read More
AB06
AB06 Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB06 profile is a simple flexible Wiper Seal which should only be considered for light duty applications where gland space is at a minimum or where an economic seal is required. Installation is easy and simple, the seal is deformed into a kidney shape and inserted into the groove, …Read More
AB07
AB07 Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB07 is a flexible snap-fit wiper seal with an angled shoulder to suit older design angled housings. Pre-load on the outside diameter ensures a stable fit in the seal housing and helps prevent dirt passing through the back of the groove onto the rod seal arrangement. The AB07 has …Read More
AB08
AB08 Temperature Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB08 profile is a design commonly referred to as a Hat Wiper and is suitable for both closed and open housings (the use in open housings requires the use of a retaining ring). The AB08 can be supplied with drilled locating holes on the flange upon request, confirmation of …Read More
AB11
AB11Pressure Max: 16 bar
Temperature
Min: -55 °C Max: 210 °C
Speed
Max: 5 m/s
The AB11 is a flexible Snap-Fit Wiper Seal which is designed for use in medium to heavy duty applications. The AB11 provides back-up to the rod sealing system by providing an additional sealing lip in the pressure direction to prevent leakage of any fluid bypass from the rod seals. The …Read More
AB11A
AB11APressure Max: 16 bar
Temperature
Min: -50 °C Max: 150 °C
Speed
Max: 5 m/s
The AB11A is a flexible Snap-Fit Wiper Seal which is designed for use in medium to heavy duty applications. The 3-step design is secured into the housing to prevent bypass of external contaminants around the outside diameter of the groove. AB11A provides back-up to the rod sealing system by providing …Read More
AB11B
AB11B Temperature Min: -35 °C Max: 210 °C
Speed
Max: 5 m/s
The press-fit installation of our AB11B Wiper Seal prevents contamination occurring via the outside diameter of the seal groove and gives the customer the ability to design the gland with simple counter-bore machined groove. The precision machined scraping lip is designed to provide a heavy load against the rod and …Read More
AB12
AB12 Temperature Min: -50 °C Max: 210 °C
Speed
Max: 5 m/s
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 …Read More
AB13
AB13 Temperature Min: -50 °C Max: 260 °C
Speed
Max: 1 m/s
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 …Read More
AB14
AB14 Temperature Min: -50 °C Max: 260 °C
Speed
Max: 1 m/s
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 …Read More
AB14EXT
AB14EXT Temperature Min: -50 °C Max: 260 °C
Speed
Max: 1 m/s
The AB14E is a modification of the standard AB14 profile and has been designed to scrape externally on cylinder bores. AB14E is an excellent heavy-duty clip-fit scraper and is recommended when scraping of abrasive particles is required. The groove design for this profile is simple which means machining of the …Read More
AB25
AB25Temperature Min: -50°C Max: 210°C
Speed
Max: 10 m/s
Profile AB25 is best known as a low-friction composite Wiper Seal and consists of a PTFE or Hard PU scraper element and an elastomeric O-Ring. The O-Ring energises the low-friction scraper element to provide an effective barrier to help prevent ingress penetrating into the gland and contaminating the hydraulic system …Read More
AB26
AB26Temperature Min: -50°C Max: 210°C
Speed
Max: 10 m/s
Profile AB26 is a double acting composite Wiper Seal which consists of a main PTFE or Hard PU scraper element and two elastomer O-Rings. The O-Rings energise the scraper element and provide an effective barrier to stop ingress penetrating into the housing. The AB26 provides two functions, a positive scarping …Read More
AB27
AB27Temperature Min: -50°C Max: 210°C
Speed
Max: 10 m/s
Profile AB27 is a double acting composite Wiper Seal which consists of a main PTFE or Hard PU scraper element and elastomer O-Ring. The O-Ring energises the scraper element and provides an effective barrier to stop ingress penetrating into the housing. The AB27 provides two functions, a positive scraping action …Read More
AB28
AB28Temperature Min: -50°C Max: 210°C
Speed
Max: 5 m/s
The press-fit installation of our AB28 Wiper Seal prevents contamination occurring via the outside diameter of the seal groove and gives the customer the ability to design the gland with a simple counter-bore machined groove. The precision machined scraping lip is designed to provide a heavy load against the rod …Read More
AB29
AB29Temperature Min: -50°C Max: 210°C
Speed
Max: 5 m/s
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 …Read More
AB30
AB30Temperature Min: -50°C Max: 210°C
Speed
Max: 5 m/s
AB30 wiper seals are an older design offering dual contact wiping lips on both sides of the seal, making this type of excluder seal suitable for double rod cylinders where the shaft surfaces may be exposed to environmental debris in more than one area. Standard material for the AB30 Wiper …Read More
AB31
AB31Temperature Min: -50°C Max: 210°C
Speed
Max: 10 m/s
Profile AB31 is a double acting composite Wiper Seal which consists of a PTFE element and two elastomer O-Rings. This seal design has increased leak tightness and scraping ability compared to other types of composite wiper seals and It is usually seen in heavy industries such as steel mills and …Read More