Grate Seal® 100mm and 80mm Technical Specification Image click to zoom

Create a permanent and maintenance free, one-way seal for 4" or 100mm and 3" or 80mm drains and floor wastes with the GS01 Grate Seal®.

$55.00 Add to cart

The GS01 Grate Seal® is a specially designed rubber, one-way valve that is easily retro-fitted into 4" or 100mm and 3" or 80mm drains and floor wastes preventing sewer gases, airborne bacteria, soap suds, vermin and noise from making their way out of the drainage system into habitable areas.

As a Watermark® approved product, the one way valve does not restrict flow, and the flow rates achieved more than cope with the maximum allowable flows from plumbing fixtures such as showers. Unlike other products on the market, a water seal is not required for Grate Seal® to be 100% effective making Grate Seal a permanent and maintenance free solution.

Grate Seal® is produced from an antimicrobial polymer compound making it durable and resistant to breaking down and allowing it to be used in a wide variety of applications, including the medical and commercial field. 

Grate Seal® is supplied at a low cost considering the problems that are resolved without having to remove or replace tiled surfaces, concrete, waterproofing, etc. 

Simply cut along the marked line to convert from 4" or 100mm to 3" or 80mm (GS01 model only).

Installation Tips Technical Specifications

19 Reviews

Rosemary on 19 Jul 2018 10:36am

I bought your drain seals a month ago and just wanted to say how pleased I am with the product. No more smells and no more insects coming up through my bathroom floor waste. I had tried so many things to fix the problem, disinfectants, pellets, industrial drain cleaners, all to no avail and most of them toxic, so it was wonderful to find a product that not only worked but was environmentally friendly. Thank you

Sandy on 1 Jun 2018 3:55pm

What a fantastic product....my drains had such a bad smell, at times I thought there was something majorly wrong. Not one hint of a smell since fitting them. Can't recommend them highly enough. If I could give more stars than 5 it would be 10!!!!!!!

Ian Larkin on 24 May 2018 12:30pm

An intelligent, simple and instant solution to the age old problem of drain stink. After a few months in a brand new build my bathroom drains started to get that 'drain stink' into the air. I tried all sorts of nasty cleaning agents and even regular scrubbing the drains below the waste grate but the drain stink kept coming back. After 18 months with Grate seal installed the bathroom drain stink is permanently gone, the air is healthy in my home and no more manual cleaning nasty odour causing drain grime below the waste grate. I recommend this product to family and friends without hesitation, grate seal is simple (DIY install and remove if needed) and just does the job with lasting results of no drain stink, no suds backwash, no bugs, no drain noise. (Seriously happy!)

Margaret on 24 May 2018 9:44am

Received my order yesterday, installed and when I got up this morning ,no foul smell coming from shower. So happy. Thank you. Margaret.

Leonard on 19 Apr 2018 9:08am

Attention Tony! Thank you for your help and prompt attention to my enquiry regarding the Grate Seal. The product has been received and was easily installed. What a great invention that immediately overcame a stinking problem that I had endured for quite some time. Kind regards.

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