Designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools.

Eliminate fasteners loosening from vibration, shock and thermal expansion. Just fill in threads and wipe off excess to ensure a tight fit.

Item Specifications: Volume, .34,

Loctite #243 Medium Strength Threadlocker - Oil-Resistant Sealant for Fastener Vibration Protection

Reference Number: 3W47F6

Loctite #243 Threadlocker Medium Strength Grip - 10ml Bottle | Oil & Vibration Resistant

Optimize your bicycle maintenance with Loctite #243 Threadlocker, a professional-grade, medium-strength locking adhesive designed to secure threaded fasteners on bike components, ensuring safety, reliability, and long-lasting performance. Ideal for cycling enthusiasts and professional bike shops alike, this innovative threadlocker offers superior adhesion, resistance to environmental factors, and ease of application.

Materials & Performance:

Crafted from advanced acrylic chemistry, Loctite #243 provides excellent oil resistance and is suitable for a wide range of metal substrates commonly found in bicycle components, including steel, stainless steel, and plated fasteners. Its formulated viscosity ensures precise application while preventing excess bleed, making it perfect for bike maintenance.

Components & Technology:

This threadlocker incorporates cutting-edge polymer technology that locks fasteners in place, preventing loosening caused by vibration, shock, and thermal cycling-common challenges in mountain biking, road racing, and cycling over rough terrain. The 10ml bottle offers convenient, controlled dispensing for both shop use and personal maintenance.

Style & Use Case:

Designed for threaded bolt and nut applications such as cranksets, derailleurs, shifters, brake calipers, and seat posts, Loctite #243 ensures a secure fit without damaging threads. Its medium strength allows for easy disassembly with standard hand tools, making adjustments or removals straightforward during bike repairs or upgrades. Whether you're performing routine maintenance or assembling new components, this threadlocker is essential for maintaining optimal bike performance.

Innovative Features:

- Oil-resistant formula for use on lightly oiled or lubricated threads

- Suitable for applications requiring medium strength lockability

- Ensures vibration-resistant fastening in dynamic cycling conditions

- Convenient 10ml bottle with precision applicator tip for easy, clean application

Choose Loctite #243 Threadlocker for a dependable, high-performance solution that keeps your bike's fasteners secure, reducing the risk of mechanical failure while ensuring a smooth, safe ride. Perfect for cycling professionals and passionate cyclists seeking durable, easy-to-use threadlocking technology.

  • Loctite #243 Threadlocker Medium Strength Grip comes in a 10ml bottle, offering precise application for various fastening needs with minimal waste.
  • Engineered with advanced oil-resistant technology, this threadlocker ensures secure adhesion even on oily or contaminated surfaces, reducing maintenance and rework.
  • Designed for reliable locking and sealing of threaded fasteners, #243 provides a strong, vibration-resistant bond suitable for machinery, automotive, and maintenance applications.
  • Ideal for applications requiring easy disassembly with standard hand tools, this medium-strength threadlocker prevents loosening caused by shock, vibration, and thermal movement.
  • Compact 10ml size makes it perfect for both professional workshops and DIY projects, delivering consistent performance with hassle-free application and clean-up for long-lasting, secure fastenings.

Why 365 Cycles?

365 Cycles is an Authorized Loctite Dealer, and we offer the Full Loctite Warranty!

Fast Shipping!

Professional Customer Service- available 7 days a week
Check out our 200,000+ amazing reviews!

365 Cycles delivers all your cycling needs fast! We don't waste time preparing your order. Our priority is to serve our customers first and foremost. If you need help picking the right product, have questions about bike component compatibility, or just want to geek out about bikes we are here 7 days a week! Simply put, we are bike experts from dirt to tarmac and want to make sure you get the full 365 Cycles experience when you shop with us.

At 365 Cycles our mission is to simplify the shopping experience. We want to get you the right product in a quick time frame and be here if you need help with questions, warranty, friend to talk to, etc.

We’re dedicated to building lasting relationships with our customers, communities, and team members. We combine the knowledge and service of a traditional bicycle shop with the convenience of shopping in your own home.





Shipping & Handling

Most orders placed during the workweek before 1:30 pm EST ship the same day, but in rare cases (peak season/holiday periods) handling time can take up to 48 hours. If you have questions regarding shipping estimates, please let us know prior to placing your order. There is a direct signature requirement for all orders over $500.

Please allow 1-2 business days for your order tracking to update.

  • Cut off for SAME DAY SHIPPING- 1:30 pm EST Monday - Friday
  • Friday afternoon -Sunday orders ship the following Monday
  • Due to carrier restrictions orders shipped to: PO Box, HI, AK, & PR 365 Cycles may use a comparable service to what was selected.

Combined Shipping Discounts

To offer customers savings on shipping, we offer discounts when shipping multiple items from our store. We cannot issue refunds on shipping once an order is finalized so please follow the 5 steps below and ask if you are having trouble with the discount before you make a purchase.

  1. Be sure you are using the US site: https://www.ebay.com
  2. Select Add to Cart (instead of Buy It Now) with items from our store 365Cycles
  3. Click on Proceed to Checkout. On the checkout page, the shipping service on each line item needs to match
  4. Compare First Class vs Priority as sometimes Priority can be cheaper and it gets to you faster!
  5. You’ll need to change the shipping method to Priority on every item in your cart before the rate can be calculated.

Returns

365 Cycles offers returns for 30 days on new items in their original, intact packaging. Return shipping for ALL orders are to be paid by the buyer. Please be sure to read our return policy entirely and if you have any questions, please contact Customer Service.

Full refunds are issued on items that are brand new and we are able to resell as new. 365 Cycles reserves the right to deny returns that are outside of policy including, but not limited to, used items, items missing original packaging, items with damaged manufacturer packaging, or international orders. Return orders must be shipped in a box or bubble mailer. Items shipped without an outer box will incur a restocking fee. You will be contacted through eBay if your return is ineligible for a full refund.

Returns must be initiated within 30 days from purchase date through your Purchase History under My eBay.

If we make an error in shipping, please contact us -- we will ship out the correct item and provide a free prepaid return label as quickly as possible!

Exchanges

If you need to exchange your order, the fastest and easiest way to do this is to reorder. We will ship your new order immediately and, in the meantime, please initiate a return through eBay on the original item and return it. We will refund for the returned item once it is received back.



LU3104 .

Company Details

365 Cycles
1180 Enterprise Rd
East Petersburg, PA 17520
United States

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