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Wipers

Wipers

Wipers, also known as scraper rings, play a vital role in hydraulic cylinder systems by preventing contaminants from entering the cylinder during the piston rod retraction phase. These contaminants include dirt, dust, moisture, and other foreign particles that can degrade the performance and lifespan of hydraulic components.

Key Functions:

  • Contamination prevention: Scraper rings effectively clean the piston rod surface, reducing the risk of abrasive particles entering the hydraulic fluid and damaging seals and guide rings.

  • Protecting sealing elements: By removing external contaminants before the rod retracts, wipers extend the service life of seals and reduce the frequency of maintenance.

  • Material adaptability: Scraper rings are made from specialized elastomers or polyurethane materials designed for wear resistance, flexibility, and compatibility with hydraulic fluids.

  • Installation versatility: Designed for mounting either in grooves within the stuffing box or on metal retaining fittings attached to the cylinder body, enabling integration with various cylinder constructions.

  • Resistance to environmental factors: Wipers withstand exposure to moisture, temperature variations, and mechanical stresses, ensuring consistent performance in harsh industrial environments.

Material Options:

Common materials include:

  • Polyurethane (PU): Known for excellent abrasion resistance and elasticity.

  • Nitrile rubber (NBR): Offers good resistance to hydraulic oils and moderate temperature ranges.

  • Fluoroelastomer (FKM/Viton): Provides superior chemical and temperature resistance for demanding applications.

Applications:

Widely used in hydraulic cylinders across industries such as construction, agriculture, manufacturing, and heavy machinery, scraper rings are essential for maintaining system integrity and reducing downtime caused by contamination-related failures.

Filter
Wipers dimension
Inside diameter d (mm)
Outside diameter D (mm)
Width h
Width H
Details
Seal type
Manufacturers
Manufacturers
38
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37
22
32
17
12
16
30
31
20
25
Photo Code Name Producer Stock
Wiper 25x33x8/6 A205 PU A205-025 PU Wiper 25x33x8/6 A205 PU ALP 63
Wiper A202 25,4x32,31x4,75/2,42 PU A202-025/7 PU Wiper A202 25,4x32,31x4,75/2,42 PU ALP 117
Wiper A202 25,4x32,46x4,5/2,42 PU A202-025/4 PU Wiper A202 25,4x32,46x4,5/2,42 PU ALP 32
Wiper A202 25,4x34,85x7,5/4,45 PU A202-025/9 PU Wiper A202 25,4x34,85x7,5/4,45 PU ALP 1
Wiper A202 25,4x34,93x7,15/4,46 PU A202-025/2 PU Wiper A202 25,4x34,93x7,15/4,46 PU ALP 1
Wiper A202 25x30x6,5/4,5 PU A202-025/1 PU Wiper A202 25x30x6,5/4,5 PU ALP 79
Wiper A202 25x31x4,6/3,5 PU A202-025/10 PU Wiper A202 25x31x4,6/3,5 PU ALP 85
Wiper A202 25x31x4,6/3,7 PU A202-025/8 PU Wiper A202 25x31x4,6/3,7 PU ALP 36
Wiper A202 25x33,4x8/5 PU A202-025/6 PU Wiper A202 25x33,4x8/5 PU ALP 185
Wiper A202 25x33,6x7/5 PU A202-025 PU Wiper A202 25x33,6x7/5 PU ALP 350
Wiper A202 25x33x7/5 PU A202-025/11 PU Wiper A202 25x33x7/5 PU ALP 81
Wiper K06 25x33x5/7 K06-025 PU Wiper K06 25x33x5/7 Kastas 11
Wiper K07 25x35x5/7 NBR+Stal K07-025X35X5/7 Wiper K07 25x35x5/7 NBR+Stal Kastas request
Wiper K07 25x35x5/8 NBR+Stal 48007389 Wiper K07 25x35x5/8 NBR+Stal Kastas request
Wiper K07 25x35x7/10 NBR+Stal 48002007 Wiper K07 25x35x7/10 NBR+Stal Kastas request
Wiper K07 25x35x7/10 PU+Stal 999600 Wiper K07 25x35x7/10 PU+Stal Taiwan 100
Wiper K07 25x37x6/9 NBR+Stal 48001168 Wiper K07 25x37x6/9 NBR+Stal Kastas request
Wiper K09 25x33x4/7 K09-025 PU Wiper K09 25x33x4/7 Kastas request
Wiper K09 25x33x4/7 NBR K09-025 NBR Wiper K09 25x33x4/7 NBR Kastas request
Wiper K09 25x34x5/8,5 NBR K09-025/2 NBR Wiper K09 25x34x5/8,5 NBR Kastas 6
Wiper K09 25x35x4/7 PU K09-025/1 PU Wiper K09 25x35x4/7 PU Kastas 30
Wiper K10 25x33x6/8 K10-025 Wiper K10 25x33x6/8 Kastas 10
Wiper K107-25x33x4/6/7 PU K107-025 S Wiper K107-25x33x4/6/7 PU Kastas 37
Wiper K12 25x37x6/9 PU+Stal 48007417 Wiper K12 25x37x6/9 PU+Stal Taiwan 78
Wiper K27 25x31x3,6/4,8 PU K27-025/2 PU Wiper K27 25x31x3,6/4,8 PU Kastas 19
Wiper K27 25x33x5/7 K27-025 PU Wiper K27 25x33x5/7 Kastas request
Wiper K703-25x32,6x4,2 48004177 Wiper K703-25x32,6x4,2 Kastas request
Wiper K706 25x31,8x5 TB+NBR K706-025 Wiper K706 25x31,8x5 TB+NBR Kastas request
Wiper WAT 25x33x4/8 C0 [2EWAT372] WAT 0250 0330 040 C0 Wiper WAT 25x33x4/8 C0 [2EWAT372] Artic seals 70
Wiper WAT 25x33x5 C0 [2EWAT077] WAT 0250 0330 050 C0 Wiper WAT 25x33x5 C0 [2EWAT077] Artic seals 6 weeks
Wiper WDA 25x31x4/6 [2EWDA450] WDA 0250 0310 040 C0 Wiper WDA 25x31x4/6 [2EWDA450] Artic seals 29
Wiper WED 25x31x4 C0 [2EWED118] WED 0250 0310 040 C0 Wiper WED 25x31x4 C0 [2EWED118] Artic seals 6 weeks
Wiper WED 25x33,6x5,3/7,2 C0 [2EWED127] WED 0250 0336 053 C0 Wiper WED 25x33,6x5,3/7,2 C0 [2EWED127] Artic seals 6 weeks
Wiper WED 25x33x5,3/7,2 C0 [2EWED639] WED 0250 0330 053 C0 Wiper WED 25x33x5,3/7,2 C0 [2EWED639] Artic seals 6 weeks
Wiper WED 25x35x6 C0 [2EWED636] WED 0250 0350 060 C0 Wiper WED 25x35x6 C0 [2EWED636] Artic seals 78
Wiper WPM 25,4x34,93x4,78/7,14 NBR+Stal 105908N Wiper WPM 25,4x34,93x4,78/7,14 NBR+Stal SOG 26
Wiper WPM 25,4x36,53x6,35/7,95 NBR+Stal 100569N Wiper WPM 25,4x36,53x6,35/7,95 NBR+Stal SOG 126
Wiper WPM 25x33x4/7 NBR+Stal 110278N Wiper WPM 25x33x4/7 NBR+Stal SOG 190
Wiper WPM 25x35x5/7 NBR+Stal 109508N Wiper WPM 25x35x5/7 NBR+Stal SOG 792
Wiper WPM 25x35x5/8 NBR+Stal 103378N Wiper WPM 25x35x5/8 NBR+Stal SOG 1166
Wiper WPM 25x35x7/10 NBR+Stal 101753N Wiper WPM 25x35x7/10 NBR+Stal SOG 428
Wiper WPM 25x45x7/10 NBR+Stal 112899N Wiper WPM 25x45x7/10 NBR+Stal SOG 143
Wiper WSL 25,4x34,92x4,75/7 C0 [2EWSLI02] WSLI 1000 1375 0187 C0 Wiper WSL 25,4x34,92x4,75/7 C0 [2EWSLI02] Artic seals 62
Wiper WSL 25x31x3/4,5 C0 [2EWSL499] WSL 0250 0310 030 C0 Wiper WSL 25x31x3/4,5 C0 [2EWSL499] Artic seals 70
Wiper WSL 25x33,6x5,3/7,2 PU WSL 0250 0336 053 C0 Wiper WSL 25x33,6x5,3/7,2 PU Artic seals 284
Wiper WWS 25x33x4/7 B0 [2EWWS061] WWS 0250 0330 040 B0 Wiper WWS 25x33x4/7 B0 [2EWWS061] Artic seals 6 weeks
Wiper WWS 25x33x4/7 PU [2EWWS062] WWS 0250 0330 040 C0 Wiper WWS 25x33x4/7 PU [2EWWS062] Artic seals 420
Wiper Z-07 25,4x38,1x8 PU+Stal 48003999 Wiper Z-07 25,4x38,1x8 PU+Stal OEM 16
Wiper Z-07 25x38x7,5 PU+Stal 48003803 Wiper Z-07 25x38x7,5 PU+Stal OEM 23
Wiper 26x34x7/4 A204 PU A204-026 PU Wiper 26x34x7/4 A204 PU ALP 94
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