click to view larger image

Hylomar Gasket Sealant 40mL (OSGS)

In Stock
  • Free Shipping


  • 1 YEAR


  • ISO 9001 Certified
    ISO 9001


  • payment payment payment

    Payment Methods

Hylomar universal jointing compound 40mL.

Used in the fitting of outboard gaskets. Suitable for head gaskets, cover gaskets, exhaust gaskets, base gaskets, waterpumps, thermostat gaskets, etc.

Withstands temperatures from -60F to 600F.

  • Standard Shipping is free on all orders. Oils & Lubricant products can only be sent via Standard Shipping.
  • Express Shipping is $10 flat rate.
  • Pick up is available from our warehouse at 1/84 Brunel Road, Seaford VIC 3198 between the hours of 8:30am to 3:30pm weekdays. You will be notified by email when your order is ready for pick up.

Delivery Time

Orders are dispatched same business day if ordered before 3:00pm AEDT. All orders are dispatched from Melbourne, Victoria and are sent via Australia Post.

For delivery time estimates with Australia Post please use their delivery calculator here:

If you have any questions relating to shipping, please contact us by emailing


By: on 7 June 2023
Just the ticket

The best gasket sealant by far

By: on 28 April 2023
I bought this after watching a video that demonstrates the proper way to use it and how good it is. I previously tried a Loctite product that let me down. Buy this Hylomar and your leaking gasket worries are over forever. My biggest tip with this stuff is to apply it with a bare finger as it's the only way to ensure you get a thin enough spread while controlling where it goes. Apply to finger first, then spread it on the parts. Pay close attention in the video about what he says regarding spreading it and the dangers of putting it on too thin. This stuff never fully dries, so you can wipe it off easily from previously coated parts, unlike some other products. A dream to work with and does what it says on the box. This is the only gasket sealant to get.

Review Hylomar Gasket Sealant 40mL (OSGS)

By: on 28 February 2022
I was very happy with the service and all parts was correct and arrived in a reasonable time frame. Im no mechanic by any means but after a couple of YouTube vids I had a crack at it and went to test my work out. The boat motor ran like a dream. Highly recommend your business and service. Thanks a lot outboard spares


By: on 16 February 2022
A non setting sealant can be relied on. I've used it for years without a failure. I came across the product many years ago from its prescribed use in aircraft engines. I've even successfully used it to reuse a cylinder head gasket in desperate times. (Note this use is NOT Recommended)


By: on 13 May 2021
Great service, always arriving on time

Write a review