Buy 11mm Crimp Aluminum Caps & PTFE/Silicone Septa

Description

Feature

Specification

Application

Product

FAQ

Packing and Delivery

Sealing Engineering & Mechanical Integrity

Engineered Sealing Solutions for ND11 Crimp Systems

Ensure zero-leakage performance for your volatile samples with our high-precision 11mm Crimp-top caps. Each aluminum seal is manufactured to exact tolerances (5.5mm center hole) to ensure a perfect fit with standard robotic arm samplers. The crimp-on mechanism provides a permanent, tamper-evident seal, making it the preferred choice for trace analysis and long-term storage where evaporation is a critical concern.

Septa Selection Guide: PTFE, Silicone, and Rubber Options

The septum is the most critical contact point with your sample. We offer multiple configurations to match your specific solvent and needle requirements:

S111/S112 (Standard): High-purity PTFE/Silicone for universal chemical resistance.

S113 (Triple Layer): PTFE/Silicone/PTFE for the ultimate chemical barrier and reduced coring.

SC115111 (Natural PTFE/Red Rubber): An economical choice for routine testing and non-critical applications.

Pre-slit Designs: Essential for thin HPLC needles to prevent vacuum buildup and ensure consistent draw volumes.

These septa maintain physical integrity across a wide temperature spectrum from -60℃ to 210℃. They are equally stable in liquid nitrogen storage and high-temperature headspace heating environments .

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Product Matrix Selection Tables

Septa Material & Application Selection

Crimp Cap Ordering & Color Coding

System Compatibility Matrix

Part No. Prefix	Septa Material	Characteristics	Best Application
S111/S112	White/Red PTFE/Silicone	High purity, excellent resealability	Standard HPLC/GC analysis
S113	Red PTFE/White Silicone/Red PTFE	Triple layer, max chemical barrier	Trace analysis & high-sensitivity GC-MS
S1111/S1122	Pre-slit PTFE/Silicone	Vacuum prevention, low injection force	High-speed sampling, thin needles
SC115111	Nature PTFE/Red Rubber	Cost-effective, good physical seal	Routine QC, single-injection tests

Part No.	Cap Type	Color / Finish	Target Hole	Center Hole
C111	Aluminum Crimp Cap	Silver (Standard)	Standard	5.5mm
SC112112	Aluminum Crimp Cap	Red	Large Opening	5.5mm
SC112113	Aluminum Crimp Cap	Blue	Large Opening	5.5mm
SC112114	Aluminum Crimp Cap	Golden	Large Opening	5.5mm

Instrument Brand	Autosampler Model	Compatibility Status	Recommended Closure
Agilent	1100, 1200, 1260, 1290 Series	Fully Compatible	11mm Crimp (ND11)
Waters	Alliance, Acquity, 2695	Fully Compatible	11mm Crimp (ND11)
Shimadzu	Nexera, Prominence, SIL-20/30	Fully Compatible	11mm Crimp (ND11)
Thermo/CTC	TriPlus, Accela, PAL Systems	Fully Compatible	11mm Crimp (ND11)

Performance Validation & Empirical Data

Simulated 2025 laboratory stressors demonstrate that our 11mm crimp system outperforms generic alternatives across several key metrics

Leak-Proof Excellence

Pressure decay tests confirm that after $50$ injections, vial pressure retention remains above $95\%$. The rapid self-healing of our high-density silicone ensures that volatile solvents like acetonitrile show negligible concentration shifts over 48-hour sequences.12

Zero-Coring Puncture Technology

By optimizing the PTFE film’s molecular cross-linking, our septa exhibit high toughness. This prevents rubber fragments (coring) from entering the sample and clogging expensive capillary columns, a critical factor in proteomics and environmental water analysis .

Precise Needle Guidance

The 5.5mm aperture provides a physical guide, ensuring the needle always strikes the geometric center of the septum. This precision significantly reduces the incidence of needle bending during high-speed automated transfers .

Advanced Color-Coded Management

Available in silver, red, blue, and gold, our color-coded caps facilitate modern Good Laboratory Practice (GLP). Technicians can visually distinguish between standards, blanks, and high-risk samples at a glance

Ultra-Low Extractable Background

In GC-MS and LC-MS total ion chromatograms (TIC), our septa demonstrate virtually zero siloxane leaching. This high purity level allows for clear peak identification in complex qualitative analysis, effectively eliminating the risk of false positives caused by consumable contamination