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Fluoro-polymers
Dust Seal FK3 For Hydraulic
Product Overview
Dust Seal FK3 for Hydraulic is a high-performance rod scraper designed for demanding hydraulic systems where reliable contamination exclusion is critical. The design integrates a precision-machined PTFE scraping ring with an elastomer O-ring energizer, forming a compact sealing set that ensures constant radial preload and optimal wiping efficiency.
This construction concept is widely used in advanced hydraulic scraper solutions for mobile and industrial equipment, providing superior dirt exclusion, long service life, and stable performance under varying operating pressures and temperatures.
FEATURE 01
Excellent dirt, mud, and ice exclusion
FEATURE 02
Very low friction and smooth rod movement
FEATURE 03
High wear resistance and long service life
FEATURE 04
Stable radial preload due to O-ring energizing
FEATURE 05
Resistant to hydraulic fluids and chemicals
FEATURE 06
Suitable for high-speed rod movements
Technical Characteristics
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Application: Rod scraper / dust seal
Material Options (Scraper Ring):
Virgin PTFE
Filled PTFE (Bronze / Carbon / Glass)
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Energizer Material:
NBR (standard hydraulic oils)
HNBR (improved heat resistance)
FKM (high temperature & chemical resistance)
-
Operating Temperature:
PTFE ring: –200°C to +260°C
O-ring depending on compound selection
Installation Type: Housing groove, press-fit
Recommended for: Static housing with dynamic rod movement
Typical Applications
Dust Seal FK3 for Hydraulic is widely used in:
- Construction machinery
- Offshore and marine hydraulic systems
- Mobile cranes and lifting equipment
- Industrial hydraulic presses
- Heavy-duty mining equipment
Design & Function
KAFLON offers multiple PTFE-based and rubber compound to meet different operating conditions:
The FK3 scraper set consists of:
Various-type PTFE scraper ring
Elastomer O-ring energizer (NBR / HNBR / FKM available)
Functional Principle:
The PTFE ring provides low friction and high wear resistance.
The O-ring energizer maintains consistent contact pressure against the rod.
The sharp wiping edge efficiently removes external contaminants during rod retraction.
This dual-component structure ensures reliable wiping performance even under eccentricity or pressure fluctuations.
📩 RFQ Information – Dust Seal FK3 for Hydraulic
To ensure accurate quotation and technical evaluation, please provide the following information:
1️⃣ Size Information
Rod diameter (d)
Housing bore diameter (D)
Groove width (L)
Installation type (open groove / closed groove)
Quantity required
2️⃣ Operating Conditions
Working pressure (if applicable)
Rod speed (m/s)
Operating temperature range
Hydraulic fluid type
Presence of abrasive contaminants (dust, sand, mud, etc.)
3️⃣ Material Requirements
Scraper ring material (Virgin PTFE / Filled PTFE / PU)
O-ring material (NBR / HNBR / FKM)
Any special chemical or temperature resistance required
4️⃣ Application Details
Equipment type (e.g., excavator, press, offshore system)
Industry (construction, mining, marine, industrial)
New project or replacement part
OEM reference or drawing (if available)
5️⃣ Additional Requirements
Surface treatment of rod (hard chrome, ceramic coating, etc.)
Special packaging request
Certification requirements (RoHS, REACH, etc.)
Delivery schedule
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