Improve your finished FKM rubber and fluoroelastomer products with our unrivalled microfine calcium hydroxide cure additive and activator. Innovoh® improves the performance and consistency of FKM compounds. Innovoh’s high purity and

high surface area offers exceptional cure performance and dispersion without sacrificing quality.

100% of the raw materials for Innovoh® are produced and refined on-site, which means Birch Chemicals can offer unrivalled quality control. This product is available immediately through our worldwide network.

Enquire now

Packed In
1kg sachet - 12kg bag
Exceptional Dispersion
Processing Temp.
140 – 280°C
Dispersion Aid
Made In
United Kingdom

  • FKM fluoroelastomers
  • Automotive seals and hoses
  • EV Vehicles
  • High performance seals and joints
  • Gas, Water and Nuclear industries
Enquire now

  • FKM fluoroelastomers
  • Automotive seals & hoses
  • EV Vehicles

The Innovox® difference

The Innovox® range has been fully tested and qualified by leading Artis and Ace Laboratories and proven to prevent visible extrusion breakout and surface defects, reducing specks, lumps and streaking in production caused by unwanted moisture in the finished product. Compare the difference by using the slider below.

View The Range

Dispersion within rubber with or without Innovox®
Without Innovox® (left), Creates damaging bubbles within the compound.
With Innovox® (right), No bubble or moisture damage.

On site = speed

Our raw materials are produced and refined on site, allowing us to deliver the unbeatable quality and rapid lead times our customers expect.

Request Free Sample

Excellent dispersion rate

Our products offer better dispersion and an incredibly consistent rate, so rubber will set quickly and evenly, reducing your waste due to quality failures.

Helpful FAQs

Frequently Asked Questions


There are no problems when using Innovoh in combination with either magnesium oxide or hydroxide. Innovoh is often used in combination with both in FKM cure systems. If you would like further information on this, please contact us.

Yes, Innovoh is used by many other compounders worldwide. Ask us for details and case studies of reference customers.

Innovoh can replace your existing calcium hydroxide cure activator as a direct 1:1 replacement – and it will perform better. Ask to see our test reports or contact us for further advice.

We have conducted extensive testing on Innovoh with external laboratories (such as Artis and ACE Consultants) and can provide test reports on request. We can also provide reference customer details within your own field of application. Contact us for more information.

Calcium hydroxide is classified as a Generally Recognized As Safe (GRAS) substance by the FDA. Innovoh is 100% calcium hydroxide powder.

Innovoh is used in bisphenol cured FKM fluoroelastomers. It is not used in peroxide cured systems. Please contact us if you require recommendations regarding your proposed use.

Addition level would depend on the moisture levels within the compound. In practice, the typical dose rate for Innovoh would be around 5 phr. If you would like more advice on addition levels, please contact us.

Innovoh is UK made, using calcium hydroxide produced in our own on-site lime hydrators. You will be able to find a satellite view of our site by using a web browser and searching for Melton Ross. For additional information, please contact us.

Leading compounders have found that by switching product to Innovoh, better compound is produced with greater consistency and fewer scrap or quality control rejects. More compounders are recognising the advantage Innovoh offers, and so specify Innovoh in all new and existing formulations.

Innovoh is usually supplied in weight defined EVA low melt sachets, e.g. 1kg or re-sealable long life HDPE pouches, e.g. 1kg. We can also offer other sizes. Ask your distributor for details or please contact us.


Our customers say it best...

  • "In the past we have had a lack of consistency with product quality and have been let down with deliveries affecting our production schedule. This is a thing of the past with Birch Chemicals. They offer flexibility and adapt to our needs to deliver an outstanding service as well as a product that is competitively priced with consistency in product quality. Their responsiveness to our operation is why we use Birch Chemicals!"

    Jake Goodwin at IPL

  • "Awesome caring company. They present the true definition of sustainability in all their endeavours."

    Richard Dee

  • "It is a pleasure to work alongside our key supplier Birch Chemicals. Their market leading expertise in the rubber industry help us to serve our valued customers to the best of our ability."

    Gokhan San at Univar Solutions


Global product, worldwide support

We work with our specialist distribution partners to offer unparalleled service and supply globally, whatever your requirement. If you want to talk rubber or plastics, coatings or adhesives just get in touch. Our distributors can speak your language - literally.

About Birch Chemicals


Sign up to the Birch Chemicals newsletter and stay up to date with industry news.

This field is for validation purposes and should be left unchanged.