---
product_id: 20598680
title: "Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth)"
brand: "captain o-ring"
price: "₨9588"
currency: LKR
in_stock: true
url: https://www.desertcart.lk/products/20598680-captain-o-ring-rubber-oring-keyboard-switch-dampeners-blue-40a
store_origin: LK
region: Sri Lanka
---

# 0.4mm sound reduction Microfiber cloth included 135 pcs included Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth)

**Brand:** captain o-ring
**Price:** ₨9588
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Typing Game with Captain O-Ring!

## Quick Answers

- **What is this?** Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth) by captain o-ring
- **How much does it cost?** ₨9588 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/20598680-captain-o-ring-rubber-oring-keyboard-switch-dampeners-blue-40a)

## Best For

- captain o-ring enthusiasts

## Why This Product

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

## Key Features

- • **Durable Design:** Crafted from high-quality EPDM rubber to resist cracking and tearing.
- • **Fatigue Fighter:** Reduces finger fatigue by shortening travel distance and impact.
- • **Complete Package:** Includes 135 O-Rings and a Captain O-Ring Screen Cleaning Microfiber Cloth.
- • **Noise Reduction Champion:** Significantly minimizes keyboard sound levels for a quieter workspace.
- • **Smoother Typing Experience:** Experience a softer landing with 0.4mm travel reduction.

## Overview

The Captain O-Ring is a set of 135 high-quality rubber dampeners designed to enhance your keyboard experience by reducing travel distance, minimizing noise, and preventing finger fatigue. Each pack includes a microfiber cleaning cloth, ensuring your workspace remains pristine while you type in comfort.

## Description

Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth)

## Features

- 0.4mm travel reduction for a softer landing and better shock absorption
- Significantly reduces keyboard sound level
- Minimizes finger fatigue by shortening travel and lessening impact
- High quality EPDM rubber resists cracking and tearing
- Includes 135 O-Rings & Captain O-Ring Screen Cleaning Microfiber Cloth

## Product Details

- **Brand:** Captain O-Ring
- **Compatible Devices:** Keyboard
- **Connectivity Technology:** USB
- **Keyboard Description:** Mechanical
- **Recommended Uses For Product:** All
- **Special Feature:** Travel
- **Color:** Black
- **Style:** Modern
- **Material:** Rubber
- **Included Components:** 135 x Rubber O-rings, 1 Screen Cleaning Microfiber Cloth

## Images

![Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth) - Image 1](https://m.media-amazon.com/images/I/71QJABh8nWL.jpg)

## Questions & Answers

**Q: Does 0.4mm in the specs mean 4 millimeters thick? 0.4 millimeters would be very very thin (i.e. less than half a millimeter).**
A: Hello.  The 0.4mm is not representative of the size of the o-rings, but rather the reduction in key-stroke travel with these installed.  You are correct, the o-rings are thicker than 0.4mm :-).  They are actually about 1.75mm thick.

**Q: So do you put these on the switch or the keycaps?**
A: you put this on the keycap, on the post that is attached to the switch. As it descends into the switch it hits the switch face. Slightly shortens the travels and dampens the impact.

**Q: Does it come with a cap remover?**
A: Hello, this kit does not include a cap remover. Most keyboard keys can be easily removed from the board with anything flat/thin enough to get under the keys and lift.

**Q: Will these work with gateron switches?**
A: These should work with any removible mechanical key caps because they are applied to the stem of the key cap, not any part of the switch itself. There are great tutorial videos online if you Google how to apply o rings to key caps.
Best of luck!

## Frequently Bought Together

- Captain O-Ring - Rubber Oring Keyboard Switch Dampeners Blue [40A-R 0.4mm Reduction] (135 pcs w/Screen Cloth)
- Captain O-Ring - Rubber Oring Keyboard Switch Dampeners/Sound Reducers Red [40A-L 0.2mm Reduction] (135 pcs w/Screen Cloth)
- Keycap Puller Stainless Steel Key Removal Tool Keycaps Remover for Mechanical Keyboard Removing Fixing Tools

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.lk/products/20598680-captain-o-ring-rubber-oring-keyboard-switch-dampeners-blue-40a](https://www.desertcart.lk/products/20598680-captain-o-ring-rubber-oring-keyboard-switch-dampeners-blue-40a)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-21*