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CFKS Water Pump Seal 28*38*5.9 FKM Fabric Reinforced High Pressure Water Seal
CFKS Water Pump Seal 28*38*5.9 FKM Fabric Reinforced High Pressure Water Seal - Image 2
CFKS Water Pump Seal 28*38*5.9 FKM Fabric Reinforced High Pressure Water Seal - Image 3
CFKS Water Pump Seal 28*38*5.9 FKM Fabric Reinforced High Pressure Water Seal - Image 4

CFKS Water Pump Seal 28*38*5.9 FKM Fabric Reinforced High Pressure Water Seal

The CFKS 28*38*5.9 Fabric Reinforced FKM Water Seal is an extreme-duty rotary boundary component engineered for the most punishing hydrodynamic environments. By fusing the chemical and thermal resilience of a premium fluoroelastomer with a structurally rigid fabric composite heel, this seal prevents catastrophic fluid bypass in high-pressure industrial pumps and heavy-duty processing equipment.

  • Extreme Extrusion Resistance: The integrated fabric matrix acts as a structural anchor, preventing seal blowout under severe axial thrust and intense pressure spikes.

  • Maximum Thermal Stability: The dynamic FKM lip maintains its elastic memory in boiling aqueous media and harsh chemicals up to 200°C.

  • Precision 28*38*5.9mm Profile: Engineered to exact dimensional tolerances for a secure, interference-fit installation in standard high-pressure pump manifolds.

Find your sealing solution with CFKS — contact us for a quote.

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Brand Name CFKS OEM  Accpetable
Material NBR FKM Silicone  Features  wear resistance
Dimensions Customized Certificate  ISO9001/TS16949
Type 28*38*5.9 High Pressure Water Seal  Packing 1 pc per bag

 

The fundamental mechanical advantage of this high-pressure water seal lies in its dual-zone composite architecture. The dynamic FKM sealing lip operates on a pressure-energized hydrodynamic principle; as the centrifugal force of the pump impeller generates high-velocity fluid movement, the resulting system pressure actively forces the lip against the rotating 28mm shaft. This creates a precise radial load that shears the microscopic fluid film, preventing bulk bypass. Simultaneously, the fabric-reinforced heel absorbs the immense axial thrust generated by the pressurized fluid. This rigid outer boundary prevents the elastomer from undergoing “cold flow” or extruding into the hardware clearance gap, ensuring the dynamic lip remains perfectly aligned under extreme hydrodynamic shock.

In demanding fluid transfer applications involving boiling OAT coolants, alkaline descalers, or abrasive suspended solids, standard Nitrile (NBR) elastomers rapidly suffer from thermal hardening, swelling, and severe hydrolysis. To combat this, our 28*38*5.9mm seals utilize a premium Fluoroelastomer (FKM/Viton) matrix. FKM provides near-universal chemical resistance and outstanding thermal stability. By vulcanizing a tightly woven synthetic fabric mesh directly into the seal’s heel, we drastically increase the compressive modulus and tear strength of the overall unit. This composite material selection allows the seal to resist the localized cavitation damage and friction-induced heat that routinely destroy standard rubber components in high-RPM industrial pumps.

In demanding fluid transfer applications involving boiling OAT coolants, alkaline descalers, or abrasive suspended solids, standard Nitrile (NBR) elastomers rapidly suffer from thermal hardening, swelling, and severe hydrolysis. To combat this, our 28*38*5.9mm seals utilize a premium Fluoroelastomer (FKM/Viton) matrix. FKM provides near-universal chemical resistance and outstanding thermal stability. By vulcanizing a tightly woven synthetic fabric mesh directly into the seal’s heel, we drastically increase the compressive modulus and tear strength of the overall unit. This composite material selection allows the seal to resist the localized cavitation damage and friction-induced heat that routinely destroy standard rubber components in high-RPM industrial pumps.

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
High Pressure Water Seal Size List
TypeSIZETypeSIZE
v type18*30*5.5U type15*22*5
v type18*28*5.5U type15*24*5
v type18*32*6U type18*26*5
v type20*32*5.5U type18*28*6
v type20*28*5.5U type20*28*5.7
v type22*28*5.5U type20*30*6
v type16*24*5.5U type28*36*5.9
v type15*25*5.5U type28*38*5.9
v type18*35*7U type22*30*6
v type14*26*5U type12*20*5
v type22*32*.5U type14*22*5
v type18*26*5.5U type18*24
v type20*35*5.5U type25*37*6.4
v type18*35*7U type13*20*5
v type18*32*7U type14*20*5
v type20*30*6U type16*24*5.5
v type20*35*7U type18*25*5
v type18*30*6U type20*35*6
v type24*35*6U type24*34*6
v type15*28*5U type18*25*5
v type18*32*5.5U type18*28*6
v type12*20*5U type18*26*6
v type12*22*5.5U type22*32*5.5
v type18*32*7.1U type18*26*5

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