Sterile Seal: Temperature Range -40°C to +180°C

Component Specifications

Definition

A specialized sealing component designed for sterile product tank interfaces in pharmaceutical, biotechnology, and aseptic processing applications. It creates a hermetic barrier between the tank and connected systems (filling lines, transfer lines, sampling ports) to maintain sterility throughout processing operations. The seal prevents ingress of microorganisms, particulates, and contaminants while withstanding sterilization cycles (SIP/CIP) and maintaining mechanical integrity under process conditions.

Working Principle

The sterile seal operates on compression sealing principles where controlled deformation of elastomeric materials creates a hermetic barrier against microbial penetration. During installation, the seal is compressed between mating flanges or surfaces, forming multiple sealing lines that block contaminant pathways. The design incorporates features to prevent dead zones where microorganisms could accumulate, and materials are selected to maintain elasticity and sealing force through repeated sterilization cycles.

Materials

Pharmaceutical-grade elastomers: Silicone (VMQ), EPDM, Fluorocarbon (FKM/Viton), PTFE-coated materials. Materials must comply with USP Class VI, FDA 21 CFR 177.2600, and EU 10/2011 regulations. Surface finish: Ra ≤ 0.8 μm to prevent microbial adhesion.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Leak Rate	< 1×10⁻⁶ mbar·L/s (helium leak test)
Dimensions	Standard flange sizes: DN 25 to DN 150
Compression Set	≤ 20% (22h at 150°C)
Pressure Rating	Up to 10 bar (145 psi)
Surface Roughness	Ra ≤ 0.8 μm
Temperature Range	-40°C to +180°C
Sterilization Cycles	≥ 1000 cycles (SIP at 121°C, 30 min)

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 2852, ISO 15848, DIN 11864, ASME BPE, FDA cGMP

Parent Products

This component is used in the following industrial products

Sterile Product Tank Interface

Interface component connecting the sterile product tank to the aseptic filling machine's filling system

View Product Details

Engineering Analysis

Risks & Mitigation

Microbial contamination due to seal failure
Leakage leading to product loss
Particulate generation from seal degradation
Cross-contamination between batches
Sterility assurance compromise

FMEA Triads

Trigger: Material degradation from repeated sterilization cycles
Failure: Loss of elasticity leading to leakage
Mitigation: Implement preventive replacement schedule based on cycle count; use materials with low compression set

Trigger: Improper installation torque
Failure: Uneven compression causing localized leakage paths
Mitigation: Use calibrated torque wrenches; follow manufacturer installation procedures; implement installation training

Trigger: Chemical incompatibility with process fluids
Failure: Swelling, cracking, or extraction of seal materials
Mitigation: Conduct material compatibility testing; maintain chemical compatibility database; use PTFE-coated seals for aggressive chemicals

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerance: ±0.2 mm on critical sealing surfaces; Surface finish: Ra 0.4-0.8 μm

Test Method

Helium leak testing per ISO 15848; Extractables testing per USP <661>; Bioburden testing per USP <61>; Sterilization validation per ISO 17665

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Sterile Seal

Manufacturer profiles associated with Sterile Seal.

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Frequently Asked Questions

How often should sterile seals be replaced in pharmaceutical processing?

Sterile seals should be replaced according to manufacturer specifications, typically every 6-12 months or after 100-200 sterilization cycles, whichever comes first. Regular inspection for compression set, surface degradation, or visible damage is essential.

What is the difference between SIP and CIP compatible sterile seals?

SIP (Steam-In-Place) compatible seals withstand direct steam sterilization at 121-134°C, while CIP (Clean-In-Place) seals resist chemical cleaning agents. Most pharmaceutical-grade sterile seals are designed for both SIP and CIP processes.

Can sterile seals be used with aggressive pharmaceutical fluids?

Yes, when material selection is appropriate. FKM/Viton seals resist most solvents and aggressive chemicals, while EPDM is suitable for alkaline solutions, and silicone for general pharmaceutical applications. Compatibility must be verified with specific process fluids.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Sterile Seal