---
product_id: 722623598
title: "ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100)"
brand: "alwsci"
price: "¥20640"
currency: JPY
in_stock: false
reviews_count: 1
category: "Alwsci"
url: https://www.desertcart.jp/products/722623598-alwsci-20-mm-closure-size-aluminum-crimp-seal-with-natural
store_origin: JP
region: Japan
---

# Temp resistant 60°C-200°C Soft silicone septa for easy vial access PTFE laminated for solvent durability ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100)

**Brand:** alwsci
**Price:** ¥20640
**Availability:** ❌ Out of Stock

## Summary

> 🔒 Seal your samples with confidence and style!

## Quick Answers

- **What is this?** ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100) by alwsci
- **How much does it cost?** ¥20640 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/722623598-alwsci-20-mm-closure-size-aluminum-crimp-seal-with-natural)

## Best For

- alwsci enthusiasts

## Why This Product

- Trusted alwsci brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Ready:** Case of 100 seals—perfect for labs and professionals who never run out.
- • **Precision Fit:** 20 mm aluminum crimp seal designed for secure, leak-proof vial closure.
- • **Heat-Defying Seal:** Withstands extreme temps from 60°C to 200°C—no compromise on performance.
- • **Effortless Penetration:** Soft white silicone septa allow smooth needle access without damage.
- • **Chemical-Resistant Armor:** PTFE lamination ensures long-lasting protection against harsh solvents.

## Overview

The ALWSCI 20 mm Aluminum Crimp Seal features a natural PTFE/white silicone septa, offering exceptional temperature resistance from 60°C to 200°C and superior chemical durability. Designed for headspace vials, this pack of 100 seals ensures secure, leak-proof closures with easy needle penetration, making it an essential choice for professionals demanding reliability and efficiency.

## Description

ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100) : desertcart.ae: Industrial & Scientific

Review: These are good against solvents for longer term use

## Features

- Temperature resistant from 60°C up to 200°C
- Completely laminated with PTFE
- Soft liners for easy penetration
- Aluminum Cap, plain, 10 mm centre hole
- Pack of 100

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B082CH9LTH |
| ASIN  | B082CH9LTH |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Natural Ptfe/White Silicone Septa |
| Customer Reviews | 4.4 4.4 out of 5 stars (8) |
| Customer reviews | 4.4 4.4 out of 5 stars (8) |
| Date First Available | 11 June 2019 |
| Date First Available  | 11 June 2019 |
| Is Discontinued By Manufacturer  | No |
| Item Weight | 150 g |
| Item model number | 20-SP3002 |
| Item model number  | 20-SP3002 |
| Manufacturer | ALWSCI |
| Manufacturer  | ALWSCI |
| Package Dimensions | 14 x 13 x 3.2 cm; 150 g |
| Package Dimensions  | 14 x 13 x 3.2 cm; 150 g |
| Part number | 20-SP3002 |
| Size | 20mm Aluminum Crimp Seal |
| Style | Natural PTFE/White Silicone Septa |

## Images

![ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100) - Image 1](https://m.media-amazon.com/images/I/51RBUdrI3WL.jpg)
![ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100) - Image 2](https://m.media-amazon.com/images/I/61JtHMKlRpL.jpg)
![ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100) - Image 3](https://m.media-amazon.com/images/I/61Syx4TtmmL.jpg)
![ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100) - Image 4](https://m.media-amazon.com/images/I/71+dBea1MEL.jpg)
![ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100) - Image 5](https://m.media-amazon.com/images/I/712GdORuK6L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by N***I on 25 April 2025*

These are good against solvents for longer term use

## Frequently Bought Together

- ALWSCI 20 mm Closure Size, Aluminum Crimp Seal with Natural PTFE/White Silicone Septa for Headspace Vial (Case of 100)
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**Shop now:** [https://www.desertcart.jp/products/722623598-alwsci-20-mm-closure-size-aluminum-crimp-seal-with-natural](https://www.desertcart.jp/products/722623598-alwsci-20-mm-closure-size-aluminum-crimp-seal-with-natural)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-17*