Side seal for flake grate
The side seal is the sealing element on both sides of a flake-type chain grate. It closes the gap between the grate surface and the side wall and reduces air bypass.
Fitting position and sealing duty
The side seal runs lengthwise along both sides of the grate and overlaps the ends of the flake grate bars to form a continuous sealing strip. When the air beneath the grate passes upward through the fuel bed, the two edges are where leakage is most likely, and the side seal blocks that path. It is fitted together with clamping plates, clips and other fasteners, and can be replaced at the same time as the grate bars on that side.
Material and replacement interval
The usual materials are ductile iron and alloy steel, and both have a typical service life of 18-30 months in the spare-parts list. The side seal is a wear part: once the sealing face has worn thin or chipped, it should be replaced promptly so that leakage at the sides does not affect combustion. Material and dimensions can be made to the original machine requirements.
| Item | Parameter |
|---|---|
| Available materials | Ductile iron, alloy steel |
| Typical service life | 18-30 months |
| Fitting position | Both sides of the grate surface |
Supply and selection support
The partner factory handles dispatch, and we can supply side seals to the original dimensions and tolerances, together with matching flake grate bars, chain links, pins and clamping clips. For selection, just give us the grate model and the dimensions or drawing of the old part, and we can help confirm the material and quantity. The products we supply meet the requirements of the NB/T 47050-2016 technical standard.