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Use prior to seaming tape/patch. Coverage: Allow 1 litre for 15m of seam tape.
Also available in a 250ml can and 3.8L (1 US gallon) can
Firestone QuickPrime Plus EPDM Seam Primer 0.946 litre (US Quart) - W56RAC1695
Apply EPDM Seam Primer with a Firestone QuickScrubber Tool or at least a clean Scotchbrite type plastic scouring pad onto the surface of the EPDM liner, prior to the application of:
Coverage: Allow 1 litre for 15m of 76mm wide seam splice tape.