Buy 11mm Crimp Aluminum Caps & PTFE/Silicone Septa

Description

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Specification

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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

Frequently Asked Questions (FAQ)

The 11mm crimp system is a critical guardian of your analytical data accuracy. Every component is subjected to end-to-end quality control.

Why choose 11mm Crimp Caps over Screw Caps for my HPLC analysis?

Crimp-top caps provide the most secure, tamper-evident seal. Because the aluminum seal is physically compressed onto the vial neck, it offers superior protection against solvent evaporation compared to screw caps. This is critical for volatile organic compounds (VOCs) and long-term sample storage.

How does the "Large Opening" design (7.0 type) benefit my lab workflow?

Our 11mm crimp vials feature a 40% wider opening than standard narrow-neck vials. This significantly increases the target area for the autosampler needle, virtually eliminating the risk of bent or broken needles during high-speed robotic sampling. It also makes manual pipetting much easier.

When should I use Pre-slit Septa (S1111/S1122) instead of standard septa?

Pre-slit septa are highly recommended for HPLC systems with thin, blunt, or fragile needles. The slit prevents a vacuum from forming inside the vial during sample withdrawal, ensuring precise injection volumes. For GC analysis or very volatile samples, we recommend non-slit septa to maintain a maximum hermetic seal.

What are the advantages of S113 Triple-layer (PTFE/Silicone/PTFE) septa?

The S113 triple-layer design provides a PTFE barrier on both sides of the silicone. This ensures that the sample only comes into contact with inert PTFE, while the extra top layer prevents the septum from sticking to the crimper or needle, minimizing sept

Can I customize the cap color and septa material?

Yes. We offer OEM/ODM services. You can customize the aluminum cap color (Silver, Red, Blue, Gold, Green) and the septa material/size to match your laboratory's specific color-coding system or solvent compatibility requirements.

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Packing and Delivery

Packing

Each vial is individually protected in shrink-wrapped trays, 100–200 pcs per inner box, then packed into corrugated export cartons.

Labeling

Each carton includes lot number and product information for traceability.

Delivery Time

Normally 7–15 working days after order confirmation.

Shipping Options

Air freight, sea freight, or express (DHL/UPS/FedEx) available upon request.

Storage Condition

Store in a clean, dry environment at room temperature.

Company Profile

Zhejiang Aijiren Technology Co., Ltd.

A dedicated original manufacturer of chromatography and laboratory consumables.

10,000+ m² modern facility with Class 100,000 cleanrooms
Automated production lines and rigorous in-house quality control
High-volume capacity, fast lead times, and reliable global supply
OEM/ODM customization with full batch traceability
Trusted by laboratories and analytical instrument brands worldwide

VR Showroom

OEM/ODM Custom Laboratory Consumables

Aijiren turns your customized requirements—size, material, color, logo, or packaging—into reliable, ready-to-use products.

OEM/ODM

Precise manufacturing based on your drawings and specifications, with one-stop development support

Confidentiality

Full protection of all commercial information, molds, and designs

Stable Supply

Automated production ensures consistent quality and fast lead time

Technical Support

Dedicated team ensures smooth communication and hassle-free delivery

FAQ From Customers (VR Display)

What certificates do you have?

Aijiren is certified to ISO 9001:2015 by SGS, ensuring controlled manufacturing processes and stable, fully traceable product quality.

With continuous investment in R&D and multiple independent patents, we deliver high-performance and reliable consumables to laboratories worldwide.

Some of the certificates of Aijiren are displayed

What’s the MOQ? Do you accept small orders?

Aijiren supports both standard and small batch orders. While MOQ varies by product type, we are happy to accommodate smaller quantities for trial, testing, or special projects. Please contact us for specific requirements. aijiren Quality control

Is the quality guaranteed?

All Aijiren products undergo random sampling and multiple in-house quality tests. Each batch is fully traceable, ensuring stable and reliable performance for your laboratory work.

What kind of after-sales support does Aijiren provide?

Aijiren provides practical after-sales support:

● Returns & replacements: Any product affecting use or sales can be returned or replaced.

● Technical support: Assistance with product use and troubleshooting.

● Order tracking & follow-up: We monitor shipments and follow up to ensure timely delivery.

● Dedicated contact: Aijiren provides a direct contact for after-sales inquiries.

This ensures your laboratory work runs smoothly with minimal disruption.

How long will it take for orders?

The delivery time depends on the order quantity and whether customization is required:

In-stock products: shipped within 3–7 days after payment
Standard bulk orders: shipped within 2–4 weeks
OEM/ODM customized products: shipped within 3–5 weeks (depending on mold, logo, color, packaging, etc.)
Aijiren has automated production lines and a 100,000-class cleanroom, ensuring stable lead times and reliable supply.