9mm Screw Caps with Septa

The Best Seal for ND9 Vials

These 9mm Short Thread Caps are made to fit perfectly with our ND9 Wide Opening Vials. The short thread design makes it easy to seal the cap tightly with just a quick half-turn. This makes the lab 40% more efficient than using regular screw caps.

We only use PTFE and silicone that are of chromatographic grade. The PTFE layer (the one that faces the sample) offers the best chemical resistance, and the Silicone layer makes sure that the seal stays intact after many injections.

Why Choose Bonded and Pre-slit Caps?

Getting rid of the two big problems with autosampler operations: septa push-through and vacuum formation.

Bonded Technology (No Push-Through) A blunt needle or too much pressure can push the septum into the vial in standard caps. The septum and the cap are chemically fused together by our Bonded Caps. This keeps the septum in place, which stops instruments from getting stuck and samples from being lost.

Pre-slit Septa (Vacuum Protection) A vacuum can form inside the vial when you inject quickly or draw a lot of samples. Pre-slit septa let air equalize right away, which makes sure that the sample draw volume is always the same and stops the needle from bending.

Color Coding Strategy You can get it in blue, red, black, green, and yellow. You can quickly tell the difference between sample batches, QC standards, or different types of solvents by using different colors instead of reading labels.

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Product Specification

Pre-assembled caps and septa (standard and pre-slit)

Bonded & Specialized Caps (Closed-top & Custom Colors)

Individual Components (Septa Only / Cap Only)

Part No.	Septa Material (Color)	Cap Color / Hole	Slit Type	Pcs/Pack
SC9191	White PTFE/Red Silicone	Blue PP / Open	None	100
SC91191	White PTFE/Red Silicone	Blue PP / Open	Pre-slit (I)	100
SC9291	Red PTFE/White Silicone	Blue PP / Open	None	100
SC92291	Red PTFE/White Silicone	Blue PP / Open	Pre-slit (I)	100
SC9391	Red PTFE/White Sil/Red PTFE (Sandwich)	Blue PP / Open	None	100

Part No.	Septa Material (Color)	Cap Type / Color	Feature	Pcs/Pack
B-SC9291	Clear PTFE/White Silicone	Blue PP / Open	Bonded (一体粘合)	100
B-SC92291	Pre-slit Clear PTFE/White Silicone	Blue PP / Open	Bonded + Pre-slit (I)	100
B-SC9291-A	Red PTFE/White Silicone	Blue PP / Open	Bonded (一体粘合)	100
B-SC9193-A	Clear PTFE/Red Silicone	Black PP / Open	Bonded (一体粘合)	100
SC9192	White PTFE/Red Silicone	Blue PP / Closed-top	Storage/No Injection	100
SC9194	White PTFE/Red Silicone	Black PP / Closed-top	Storage/No Injection	100
SGSC9291	Clear PTFE/WhiteSilicone	Blue PP + Metal Cap	High Pressure	100
SC9291-C	Red PTFE/White Silicone	Clear PP / Open	Transparent Cap	100

Part No.	Type	Description	Color / Feature	Pcs/Pack
S91	Septa Only	White PTFE/Red Silicone	Standard	100
S944	Septa Only	Blue PTFE/White Silicone	I Pre-slit	100
SX944	Septa Only	Blue PTFE/White Silicone	X Pre-slit	100
C91	Cap Only	Blue PP, 6mm Hole	Standard Blue	100
C92	Cap Only	Blue PP, Closed-top	Storage/Sealing	100
C93	Cap Only	Black PP, 6mm Hole	Color Coding (Black)	100
C94	Cap Only	Black PP, Closed-top	Storage/Sealing (Black)	100
C95	Cap Only	Red PP, 6mm Hole	Color Coding (Red)	100
C96	Cap Only	Red PP, Closed-top	Storage/Sealing (Red)	100
C97	Cap Only	Yellow PP, 6mm Hole	Color Coding (Yellow)	100
C99	Cap Only	Green PP, 6mm Hole	Color Coding (Green)	100

Application & Compatibility Guide

A universal closing system for modern chromatography.

Agilent HPLC/GC

Fits perfectly with the gripper arms of Agilent 1100, 1200, and 1260 series autosamplers.

Sample Storage

Use Closed-top caps (C92/C94) for long-term storage of samples in refrigerators to prevent evaporation.

Bonded for Safety

Recommended for labs that use thick or blunt needles and where standard septa tend to fall in.

Multi-Injection

Using high-quality silicone makes sure that the septum seals well after penetration, which protects sensitive samples.

Trace Analysis

PTFE facing keeps extractables from messing up sensitive MS (Mass Spec) data.

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.