Description
Spring energized o-rings
Product Name: FEP-Encapsulated Stainless Steel Spring Composite Seal
Product Positioning: High-performance corrosion-resistant sealing solution
Core Features: Combines fluorinated ethylene propylene (FEP) encapsulation with a stainless steel spring, merging chemical resistance with high elasticity. Designed for extreme operating conditions, including high temperature, high pressure, and aggressive chemical environments, ensuring long-term reliable sealing.
Detailed Product Description
1.Material & Structural Design
Outer Layer (FEP):
Chemical Resistance: Resists strong acids (e.g., sulfuric acid, hydrochloric acid), alkalis, organic solvents, and oxidizers, with minimal reactivity to most chemicals.
Temperature Resistance: Operates continuously from -200°C to +200°C, with short-term peak tolerance up to +260°C.
Surface Properties: Ultra-low friction coefficient (0.15–0.20), anti-adhesive, easy to clean, and compliant with FDA standards for food and pharmaceutical applications.
Inner Structure (Stainless Steel Spring):
Material: 316L stainless steel (304 optional), offering chloride ion resistance and excellent fatigue strength.
Function: Delivers consistent elastic force compensation, adapting to dynamic/static sealing applications while ensuring tight sealing surface contact.
Encapsulation Process: Precision molding or extrusion ensures seamless bonding between the FEP layer and spring, with uniform thickness (±0.1 mm) and no defects such as bubbles or delamination.
2. Key Advantages
Dual Performance Integration: Combines FEP’s chemical inertness with the spring’s resilience, addressing aging or deformation issues common in single-material seals.
Extended Service Life: Exceptional anti-creep properties maintain sealing stability under cyclic pressure, offering 3–5x longer lifespan than standard rubber seals.
Customization Flexibility: Supports tailored dimensions (3–300 mm diameter), encapsulation hardness (Shore D50–65), and spring preload to meet non-standard equipment requirements.
3. Typical Applications
Chemical Industry: Reactor agitator shaft seals, acid/alkali valve stem seals, pipeline flange seals.
Semiconductor Manufacturing: Seals for high-purity chemical delivery pumps and CMP equipment, preventing metal ion contamination.
Food & Pharmaceuticals: Aseptic filling systems, fermentation tank seals, compliant with GMP cleanliness standards.
Energy & Environmental: Flue gas desulfurization systems, high-temperature steam valve seals, resistant to sulfide corrosion.
4. Technical Specifications
Parameter Range/Properties
Operating Temperature -200°C to +200°C
Max. Working Pressure Static: 40 MPa, Dynamic: 25 MPa
Compatible Media pH 0–14, organic solvents, gases
Standard Dimensions ID: 5–250 mm, Cross-section: 3–20 mm
Certifications FDA 21 CFR 177.1550, RoHS
5. Selection & Customization
Standard Models: ASTM/DIN-compliant size libraries for quick selection.
Custom Options:
Enhanced compatibility with specific media (e.g., hydrofluoric acid, concentrated nitric acid).
Dual-layer encapsulation (FEP+PFA) for improved wear resistance.
Spring preload optimization for high-frequency vibration scenarios.
For more information or inquiry,please request.
Dimensions:
AS568 series
JIS B2401 series
BS 4518 series
Non-standard sizes available.
For more information,please contact us.
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