Heavy flake side seal

Heavy-duty large-flake side seals sit on both sides of a wide grate and block air from bypassing along the side walls. We supply reinforced replacement parts from our partner factory.

What they do on a wide grate

The large-flake grate serves large industrial boilers and has a fairly wide grate surface, with the two sides being the weak points for air supply. Side seals are fitted along both sides of the grate and stop air from bypassing along the side walls, so more of the supply air passes through the fuel bed on the grate surface.

Reinforced structure and machining

Heavy-duty side seals are designed for wide grates and use an extra-thick cast section to extend service life; the mating surfaces are precision machined to ensure correct interlocking. Cr25Ni20 and Cr26Ni12 heat-resistant alloys are available. Together with splints and fasteners, the side seals are pressed tight against both sides of the grate, and they are a wear position on a wide grate that needs regular inspection.

Material system and technical standard

The material range at our partner factory covers HT200, HT250, RTSi5, RQTSi5, RTCr16, RTCr, RTCr2, RTCr5 and RTCr2Si4Mo, with customisation to customer requirements, and the products meet the NB/T 47050-2016 technical standard. Heavy flake grate bars, rollers, splints and wear strips from the same series can be supplied as a matching set with the side seals.

Size range

The spare parts in this series are designed for grates of 35 t/h to 160 t/h capacity. Please send us the grate model or drawing so that we can check the length, section and quantity of the side seals.