--- 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: "101 zł" currency: PLN in_stock: true reviews_count: 11 category: "Captain O Ring" url: https://www.desertcart.pl/products/20598680-captain-o-ring-rubber-oring-keyboard-switch-dampeners-blue-40a store_origin: PL region: Poland --- # 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:** 101 zł **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?** 101 zł with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/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 These Captain O-Ring keyboard switch dampener o-rings can be quickly installed on the stems of your keyboard keys to prevent keys from bottoming out. Bottoming out occurs when a key is pressed down to its limit, causing the key stem to collide with the switch casing. This results in a loud "clacking" noise while typing that affects virtually every mechanical keyboard. Captain O-Rings's keyboard dampeners provide a shock absorber at the bottom of each key to create a consistent, uniform sound while typing. These dampeners also reduce the travel of keys by 0.4mm, which greatly reduces finger fatigue. Durable EPDM rubber o-rings don't crack like black buna o-rings typically do in this application. To install, simply remove each key, place o-ring around the stem, and replace each key. Installation typically takes 4-5 minutes for the entire keyboard and lasts the life of the keyboard. What to expect: This item includes 135 keyboard o-rings and 1 Captain O-Ring screen cleaning cloth in a resealable zip-top poly bag with "Captain O-Ring" branded packaging. Manufactured and warrantied against defect for one year by Captain O-Ring LLC. "Captain O-Ring" is a registered trademark of Captain O-Ring LLC. Review: Easy to install, good sound dampening - Installed on a gaming keyboard (Redragon K585) but should work on most mechanical keyboards that accept swapping key caps. The noise reduction was noticeable. Key travel was of course slightly reduced, but was expected. No adverse gaming performance. Review: Good thickness, good sound dampening - I was worried these would be too thick and would have a detrimental impact on how far the keys can go down on my Wooting keyboard, but they actually feel pretty good, both for typing and gaming. They quiet the keys quite a bit. No complaints. ## 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 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B017HJMLDU | | Additional Features | Travel | | Antenna Location | All | | Best Sellers Rank | #774 in Computer Keyboards | | Brand | Captain O-Ring | | Built-In Media | 135 x Rubber O-rings, 1 Screen Cleaning Microfiber Cloth | | Button Quantity | 135 | | Color | Black | | Compatible Devices | Keyboard | | Connectivity Technology | USB | | Customer Reviews | 4.5 4.5 out of 5 stars (282) | | EU Spare Part Availability Duration | 1 Years | | Enclosure Material | Rubber | | Hand Orientation | Ambidextrous | | Item Weight | 0.01 Pounds | | Keyboard Description | Mechanical | | Keyboard Layout | QWERTY | | Manufacturer | Captain O-Ring LLC | | Model Number | BC72657 | | Number of Keys | 135 | | Power Source | Wired | | Style Name | Contemporary | | Switch Type | Mechanical | | UPC | 722589526244 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Captain O-Ring - **Color:** Black - **Compatible Devices:** Keyboard - **Connectivity Technology:** USB - **Included Components:** 135 x Rubber O-rings, 1 Screen Cleaning Microfiber Cloth - **Keyboard Description:** Mechanical - **Material:** Rubber - **Recommended Uses For Product:** All - **Special Feature:** Travel - **Style:** Contemporary ## 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! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy to install, good sound dampening *by C***A on November 2, 2025* Installed on a gaming keyboard (Redragon K585) but should work on most mechanical keyboards that accept swapping key caps. The noise reduction was noticeable. Key travel was of course slightly reduced, but was expected. No adverse gaming performance. ### ⭐⭐⭐⭐⭐ Good thickness, good sound dampening *by P***E on July 29, 2025* I was worried these would be too thick and would have a detrimental impact on how far the keys can go down on my Wooting keyboard, but they actually feel pretty good, both for typing and gaming. They quiet the keys quite a bit. No complaints. ### ⭐⭐⭐⭐ They were not as effective as I hoped and they changed the feel of the keys. *by D***U on September 20, 2023* These O-rings saved my keyboard from getting trashed. They made my keyboard a bit quieter and softer to type on. However, they didn't dampen the sound as much as I hoped, and they changed the feel of the keys slightly. They are also a bit pricey. ## 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.pl/products/20598680-captain-o-ring-rubber-oring-keyboard-switch-dampeners-blue-40a](https://www.desertcart.pl/products/20598680-captain-o-ring-rubber-oring-keyboard-switch-dampeners-blue-40a) --- *Product available on Desertcart Poland* *Store origin: PL* *Last updated: 2026-05-04*