Professional O-Ring and Oil Seal Manufacturer, Sealing Solution Supplier Since 2008.
LBH Dust Seal for Hydraulic Systems - Premium Protection Against Contaminants
Wide Temperature Adaptability & Easy Installation for Engineering/Industrial Machinery
The LBH dust seal is a core protective component for hydraulic systems. With a double - lip all - rubber structure, it can strongly block dust, sand and other impurities from entering hydraulic cylinders, avoiding wear of internal components and extending equipment service life. Two materials are available: nitrile rubber (NBR) and fluororubber (FKM). The NBR type is oil - resistant and wear - resistant. The FKM type is resistant to high temperatures and chemicals. Both can work stably under a pressure of ≤150bar and a reciprocating speed of ≤2m/s. It is easy to install and can be directly embedded into the integral groove. It is widely suitable for engineering machinery, presses, injection molding machines and other equipment, continuously providing reliable protection for hydraulic systems and ensuring efficient operation of equipment.
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.
1. Product Advantages
Superior Protection: Adopts a double-lip all-rubber structure to block 99% of external contaminants (dust, sand, debris), preventing hydraulic cylinder internal wear and reducing maintenance costs by 30%.
Dual Material Options: Nitrile Rubber (NBR) for excellent oil/wear resistance (-35℃ to +105℃); Fluororubber (FKM) for high-temperature/chemical resistance (-10℃ to +150℃), meeting diverse industrial needs.
Stable Performance: Withstands ≤150bar pressure and ≤2m/s reciprocating speed, ensuring long-term reliability even in harsh working conditions.
Easy Installation: Directly fits into integrated grooves, no extra tools required—cuts assembly time by 50% compared to traditional seals.
2. Working Principle
The LBH dust seal forms a "double defense line" via its dual lips:
Outer Lip: First barrier to block large particles (e.g., sand) from contacting the hydraulic rod.
Inner Lip: Secondary seal to trap tiny dust and prevent residual oil leakage, while the all-rubber structure maintains tight contact with the rod surface, avoiding contaminant penetration.
3. Product Details
Structure: One-piece all-rubber design (no metal inserts) for flexible adaptation to rod movements.
Quality Testing: Each unit undergoes 3 strict inspections (dimension accuracy, material elasticity, pressure resistance) to meet ISO 9001 standards.
Customization: Supports size customization (from 10mm to 500mm inner diameter) for non-standard hydraulic cylinders.
4. Application Range
Widely used in:
Engineering machinery (excavators, loaders)
Industrial equipment (presses, elevators)
Agricultural machinery (harvesters, tractors)
Plastic machinery (injection molding machines)
5. FAQ
Q1: How to choose between NBR and FKM materials?
A1: Choose NBR for general oil-based hydraulic systems; FKM for high-temperature (＞105℃) or chemical-exposed environments (e.g., petrochemical plants).
Q2: What is the service life of the LBH dust seal?
A2: Under normal use, NBR seals last 18–24 months; FKM seals last 24–36 months (varies by working conditions).
Q3: Does Forever Seals provide after-sales support?
A3: Yes—we offer 12-month warranty, technical consultation, and replacement service for quality-related issues.
6. Forever Seals Selling Points
20+ Years of Expertise: Specialized in hydraulic seals, with a global customer base in 50+ countries.
Eco-Friendly Materials: All rubbers comply with RoHS standards, no harmful substances.
Fast Delivery: 7-day lead time for standard sizes; 15–20 days for customized orders.
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