Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
Premium DKB Dustproof Seal Ring
Ideal for Hydraulic Cylinders in Construction Equipment
The DKB dust seal ring, featuring a robust double-lip structure with a metal backing, is engineered to effectively block dust, dirt, and external debris from infiltrating machinery—particularly ideal for hydraulic cylinders in construction, automotive, and industrial equipment—while boasting durable materials like polyurethane or NBR for reliable performance across a range of temperatures and operating conditions, thus extending equipment lifespan and maintaining sealing integrity.
5.0
design customization
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Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Product Advantages
The Forever Seals DKB dust seal ring stands out with its double-lip design that enhances dust-blocking efficiency, ensuring superior protection against external particles. Crafted from high-quality materials like polyurethane (PU) or nitrile rubber (NBR) combined with a robust metal skeleton, it offers exceptional durability, wear resistance, and elasticity. Its wide operating temperature range (-35℃ to +120℃ depending on material) and adaptability to various speeds (up to 1m/s) make it reliable in diverse working conditions. The integrated metal backing adds structural stability, preventing deformation and ensuring long-term sealing performance.
Product Principle
The Forever Seals DKB dust seal ring operates on a simple yet effective principle: the double lips create a tight seal against the rod or shaft, forming a physical barrier that blocks dust, dirt, and debris from entering machinery. The outer lip acts as the first line of defense, while the inner lip provides secondary protection, ensuring minimal particle intrusion. The metal skeleton reinforces the seal's shape, maintaining consistent contact with the surface even under vibration or pressure changes, thus preserving the integrity of internal components like hydraulic cylinders.
Product Details
Material: Forever Seals offers DKB dust seal rings in PU (polyurethane) or NBR (nitrile rubber) with a metal backing (cold-rolled steel), offering a hardness of 92A for optimal flexibility and wear resistance.
Dimensions: Standardized as "DKB - Inner Diameter × Outer Diameter × Thickness" (e.g., DKB-18×30×6/9), with precise sizing by Forever Seals for a perfect fit.
Design Features: Smooth lip edges to reduce friction, corrosion-resistant metal casing, and seamless integration of rubber and metal by Forever Seals for enhanced longevity.
Performance Metrics: Operates at speeds of 0.03m/s - 1m/s; resistant to oil, aging, and moderate chemical exposure, as engineered by Forever Seals.
Product Size List
| DKB13*19*4/5 | DKB30*47*7/10 | DKB65*79*8/11 | DKB120*136*9/12 |
| DKB14*22*4/7 | DKB32*39*5/9 | DKB66*80*8/10 | DKB125*141*9/12 |
| DKB19*26*5/7 | DKB32*44*7/10 | DKB68*90*10/14 | DKB130*146*9/12 |
| DKB19*27*4/7 | DKB32*52*8/11 | DKB70*84*8/11 | DKB135*155*10/14 |
| DKB18*30*6/9 | DKB35*47*7/10 | DKB70*90*10/14 | DKB140*160*10/14 |
| DKB19*31*6/9 | DKB38*50*7/10 | DKB75*89*8/11 | DKB145*165*10/14 |
| DKB19*32*6/9 | DKB40*52*7/10 | DKB80*94*8/11 | DKB150*170*10/14 |
| DKB20*28*4/6 | DKB40*62*8/11 | DKB80*95*6/7.5 | DKB160*180*10/14 |
| DKB20*30*4/6 | DKB45*57*7/10 | DKB85*99*8/11 | DKB170*190*10/14 |
| DKB20*32*6/9 | DKB45*68*7/10 | DKB90*104*8/11 | DKB175*195*10/14 |
| DKB22*32*6/9 | DKB50*62*7/10 | DKB95*109*8/11 | DKB180*200*10/14 |
| DKB22*31.1*6.5/8 | DKB50*64*8/11 | DKB100*114*8/11 | DKB180*205*12/17 |
| DKB22*34*6/9 | DKB50*72*8/11 | DKB105*121*9/12 | DKB190*215*12/17 |
| DKB25*37*6/9 | DKB55*69*8/11 | DKB110*126*9/12 | DKB200*216*9/12 |
| DKB28*40*6/9 | DKB60*74*8/11 | DKB115*131*9/12 | DKB240*265*12/17 |
| DKB30*42*6/9 | DKB60*82*11/15 |
Application Range
Forever Seals' DKB dust seal rings are widely used in hydraulic cylinders for construction machinery (e.g., excavators, loaders), automotive systems, aerospace equipment, industrial machinery, and heavy-duty appliances. They are also suitable for oil, chemical, metallurgy, and power sectors, providing reliable dust protection in both indoor and outdoor harsh environments.
FAQ
Q: What is the service life of the Forever Seals DKB dust seal ring?
A: Under normal operating conditions, it can last 10,000+ hours, depending on environmental factors like temperature and dust concentration.
Q: Can Forever Seals' DKB dust seal rings be used with hydraulic fluids?
A: Yes, both PU and NBR materials used by Forever Seals are compatible with most hydraulic oils and lubricants.
Q: How to choose the right size of Forever Seals DKB dust seal rings?
A: Select based on the rod/shaft diameter (inner diameter) and housing bore (outer diameter) of your equipment.
Company Selling Points
Forever Seals specializes in manufacturing high-precision DKB dust seal rings with ISO-certified production processes. Our products undergo rigorous testing for pressure resistance, temperature tolerance, and dust-blocking efficiency. Forever Seals offers custom sizing options to meet unique client needs and ensures fast delivery with global shipping. Backed by 15+ years of industry experience, Forever Seals provides technical support to help clients select the optimal seal for their applications.
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