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FE-OSS Encapsulated Spring O-Ring

The FEP-encapsulated stainless steel spring seal delivers a high-reliability solution for extreme chemical and operational challenges through innovative material synergy and precision engineering. Its corrosion resistance, temperature tolerance, and extended service life significantly reduce downtime and maintenance costs, making it an optimal choice for industries such as chemicals, pharmaceuticals, and energy. Full-cycle technical support and customization ensure precise alignment with client needs.

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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