Sealing Excellence, Securing Industry

CFKS DPM Piston Combination Seal 55*39*18.4*6.35 Piston Dpm Oil Seal

The CFKS DPM Oil Seal (55x39x18.4×6.35) is a high-performance double-acting piston combination seal. Engineered for heavy-duty hydraulic cylinders, this DPM Piston Seal provides superior leakage control and integrated guiding. Its multi-component design ensures maximum durability and pressure resistance in demanding industrial environments, making it a reliable choice for hydraulic maintenance. Find your sealing solution with CFKS — contact us for a quote.

Brand Name CFKS OEM  Accpetable
Material NBR FKM Silicone  Features  wear resistance
Dimensions Customized Certificate  ISO9001/TS16949
Type DPM Seal   Packing 1 pc per bag

 

The CFKS DPM Oil Seal (55x39x18.4×6.35) is an advanced Piston Combination Seal specifically designed for double-acting hydraulic cylinders. Unlike standard single-lip seals, the DPM Type features a robust multi-piece architecture that manages pressure from both directions. This ensures absolute fluid separation and prevents internal leakage, allowing your hydraulic machinery to maintain peak power and consistent performance under varying load conditions.

Engineered for reliability, this DPM Oil Seal incorporates high-strength support rings and integrated guide elements. These components work together to prevent “gap extrusion” even at high operating pressures. By managing radial loads and maintaining perfect piston alignment, the DPM Piston Seal eliminates metal-to-metal contact between the piston and the cylinder bore. This integrated approach not only simplifies the cylinder head design but also significantly reduces friction and heat buildup during high-speed strokes.

Durability is at the core of the CFKS DPM Oil Seal. Utilizing premium NBR (Nitrile Rubber) for the sealing core and reinforced POM (Polyoxymethylene) for the guide and back-up rings, this Piston Combination Seal offers excellent resistance to hydraulic oils, abrasion, and temperature fluctuations. Whether used in construction machinery, agricultural equipment, or industrial presses, our DPM Seal provides a long-lasting, cost-effective solution that reduces maintenance frequency and protects your hydraulic system’s integrity.

Frequently Asked Questions (FAQ)

Why does my CFKS oil seal fail prematurely? Common causes and prevention tips2025-06-26T15:44:39+08:00

Premature oil seal failure can result from improper installation, poor shaft finish, incorrect material selection, or excessive pressure. To prevent this, ensure the shaft surface is smooth and within tolerance, use correct tools during installation, and choose seals made from materials compatible with your media and temperature.

How to correctly install a CFKS industrial oil seal to avoid leakage2025-06-26T16:04:32+08:00

Always clean the shaft and bore before installation. Use appropriate seal drivers to avoid deformation. Lubricate the lip before fitting to reduce friction during the first rotation. Ensure the seal is seated evenly and not tilted to avoid leaks.

What to do when your CFKS hydraulic seal is leaking under pressure2025-05-20T16:33:14+08:00

Check if the pressure exceeds the seal’s rated limit. Examine for wear, hardening, or improper installation. Replace the seal if damaged, and consider upgrading to a high-pressure CFKS seal variant. Also, verify that the housing and shaft are properly aligned.

How to choose the right CFKS oil seal for extreme operating environments2025-05-20T16:34:39+08:00

For high temperatures, aggressive chemicals, or abrasive environments, choose CFKS seals made of FKM, PTFE, or high-performance elastomers. Consider using seals with protective dust lips or metal casing. Our team can recommend the best fit for your application.

CFKS Seal Manufacturing Co., Ltd.
https://cfksseals.com/
 Email: cfksnacy@gmail.com  Mobile/WhatsApp/Wechat: (86) 188-3097-5917
DAS/KDAS Size List
Type SIZE
DAS/KDAS Combination Seal 20*11*17.7
DAS/KDAS Combination Seal 22*13*17.7
DAS/KDAS Combination Seal 25*15*20.5
DAS/KDAS Combination Seal 25*15/1*29.1
DAS/KDAS Combination Seal 25*16*17.7
DAS/KDAS Combination Seal 28*19*17.7
DAS/KDAS Combination Seal 30*21*17.7
DAS/KDAS Combination Seal 32*22/1*20.7
DAS/KDAS Combination Seal 32*22*29.1
DAS/KDAS Combination Seal 32*24*21.9
DAS/KDAS Combination Seal 35*25/1*20.7
DAS/KDAS Combination Seal 35*25*29.1
DAS/KDAS Combination Seal 40*24*31.1
DAS/KDAS Combination Seal 40*26*20.7
DAS/KDAS Combination Seal 40*30*29.1
DAS/KDAS Combination Seal 40*30/1*20.5-
DAS/KDAS Combination Seal 40*30/2*20.5+
DAS/KDAS Combination Seal 42*28*20.7
DAS/KDAS Combination Seal 45*29*31.1
DAS/KDAS Combination Seal 45*31*20.7
DAS/KDAS Combination Seal 45*35*29.1
DAS/KDAS Combination Seal 50*34/1*26.7
DAS/KDAS Combination Seal 50*34*31.1
DAS/KDAS Combination Seal 160*135*44.4
DAS/KDAS Combination Seal 160*143*40.9
DAS/KDAS Combination Seal 160*138*36.7
DAS/KDAS Combination Seal 165*140*44.4
DAS/KDAS Combination Seal 170*145*50.8
DAS/KDAS Combination Seal 175*150*50.8
DAS/KDAS Combination Seal 180*155*50.8
DAS/KDAS Combination Seal 180*150*48.1
DAS/KDAS Combination Seal 185*160*50.8
DAS/KDAS Combination Seal 190*165*50.8
DAS/KDAS Combination Seal 195*170*50.8
DAS/KDAS Combination Seal 200*175*50.8
DAS/KDAS Combination Seal 210*185*50.8
DAS/KDAS Combination Seal 220*190*48.1
DAS/KDAS Combination Seal 220*195*50.8
DAS/KDAS Combination Seal 230*205*50.8
DAS/KDAS Combination Seal 240*215*50.8
DAS/KDAS Combination Seal 250*225*50.8
DAS/KDAS Combination Seal 250*220*48.1
DAS/KDAS Combination Seal 260*235*60.5
DAS/KDAS Combination Seal 275*250*48.3
 

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