Jul 17: CFKS Expert Hydraulic Seals: Precision Sealing Solutions for Demanding Applications
Jul 16: CFKS Deepens Industry Expertise with High-Performance Washing Machine Seals
Jul 15: Understanding Bonded Seals: Structure, Function, and Applications
Jul 11: CFKS Expands Its Hydraulic Sealing Portfolio with High-Performance TG Oil Seals for Rotary Shaft Applications
CFKS SEALS Logo
Call (86) 188-3097-5917

Sealing Excellence, Securing Industry

CFKS Self-Centering Dowty Seal NBR Bonded Seal Stainless Bonded Washer Kit
CFKS Self-Centering Dowty Seal NBR Bonded Seal Stainless Bonded Washer Kit - Image 2
CFKS Self-Centering Dowty Seal NBR Bonded Seal Stainless Bonded Washer Kit - Image 3
CFKS Self-Centering Dowty Seal NBR Bonded Seal Stainless Bonded Washer Kit - Image 4

CFKS Self-Centering Dowty Seal NBR Bonded Seal Stainless Bonded Washer Kit

The CFKS Self-Centering Stainless Steel Bonded Seal Kit provides maintenance engineers with the ultimate fluid power repair assortment for high-pressure and corrosive environments. By integrating a specialized thread-gripping elastomeric membrane into the NBR lip of a rigid stainless steel outer ring, these premium Dowty washers guarantee perfect concentric alignment during assembly. This comprehensive multi-size kit completely eliminates the offset blowouts associated with standard washers, significantly reducing Mean Time To Repair (MTTR) in critical hydraulic and pneumatic systems.

  • Flawless Concentricity: The internal self-centering membrane grips fitting threads, ensuring perfectly uniform radial compression and eliminating eccentric leak paths.

  • Comprehensive Repair Assortment: Systematically organized by standard BSP and Metric sizes to provide exact-fit, blowout-proof seals for emergency field repairs.

  • Marine-Grade Stainless Casing: The rigid stainless steel outer rings offer absolute immunity to environmental rust, making this kit mandatory for offshore, chemical, and food-grade washdown applications.

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

Product Categories

Recent Posts

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

 

The CFKS Self-Centering Bonded Seal Kit solves this mechanical vulnerability entirely. Every seal in the assortment features a thin, flexible extension of the NBR inner ring that actively grips the root of the fitting’s threads. As a technician threads the fitting into a manifold block, the seal is forced into perfect concentric alignment. Having these self-aligning seals available in a comprehensive, multi-size kit ensures that maintenance teams can instantly restore geometrically perfect, blowout-proof hydrodynamic boundaries—frequently capable of withstanding spikes over 10,000 PSI (700 Bar)—without second-guessing their blind assemblies.

The dynamic inner sealing elements across all sizes are injection-molded from a highly cross-linked, high-density Nitrile Butadiene Rubber (NBR). This optimized elastomeric matrix is strictly engineered for standard mineral-based hydraulic oils, water-glycol fluids, and pneumatic systems operating continuously at temperatures up to 100°C. It actively resists the chemical degradation and compression set that destroy inferior commercial rubbers.

From a heavy equipment manufacturing and plant maintenance perspective, a self-centering Dowty washer kit is an invaluable asset. Because the inner membrane physically holds onto the fitting threads, technicians can confidently pre-assemble fittings and install them into vertical, inverted, or hard-to-reach blind ports deep inside a machine chassis without the seal slipping off or dropping into the oil pan.

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
Bonded Seal Size List
MIDInner diameter toleranceODOuter Diameter ToleranceApplicable Thread
66.4±0.1212±0.12M6
88.414M8
1010.416M10(G1/8")
1212.418M12
1414.420±0.15M14(G1/4")
1616.422M16
1818.425M18(G3/8")
2020.5±0.1428M20
2222.530M22(G1/2)
2424.532±0.20M24
2727.535M27(G3/4")
3030.538M30
3333.5±0.1742M33(G1)
3636.646M36
3939.650M39
4242.653±0.25M42(G11/4)
4545.656M45
4848.760M48(G11/2)
5252.7±0.2066M52
6060.775M60(G2")

MESSAGE

Bonded Seal (20) BS Seal (3) Cassette Oil Seal (3) Combi Oil Seal (3) Construction Seal (9) Coupling Spider (17) DAS Seal (3) DH Seal (4) DHS Seal (3) DK/DP Seal (3) DLI Seal (3) EC Cup Seal (3) Glyd Ring (5) Guide Ring (16) HBY Seal (2) High Pressure Water Seal (37) Hydraulic Oil Seal (160) IDU Seal (7) JA Seal (5) J Type Seal (5) LBI Seal (2) O-Ring/O-Ring Kit (12) ODU Seal (8) OK Seal (3) OUY Seal (3) Piston Seal (25) Polyurethane Bump Stop (6) Polyurethane Washer (3) Power Transmission Parts (26) Rod Seal (48) Rotary Shaft Oil Seal (40) Split Oil Seal (4) Split Rotary Shaft Seal (3) Spring Energized Seal (3) Stainless Steel Oil Seal (3) Step Seal (3) TBV (20) TC/TG Seal (101) TCV/TCN (10) UHS Seal (3) UN/USH/UPH Rod Seal (21) UPH Seal (2) VA/VS Seal (3) Washing Machine Seal (12) Wiper Seals/Dust Seal (36)

Recently New Seals

View New Products Get Support

Follow Us

Get a Quote or Ask a Question

NAVIGATION

CFKS PRODUCT RANGE

CONTACT US

© CFKS Seals Manufacturing Co., Ltd. All Rights Reserved

Go to Top