Material:GRP

1.GRP Sealing Plate to withstand 1 meter head of water and 7.5 kN/m2 point load and thickness shall be minimum 7mm.    
2.Resin to glass ratio is 75% to 25% by weight with a tolerance of ± 5%.   
3.GRP Sealing plate is gas tight from both sides.                            
4.GRP Sealing plate seal material is EPDM.                                
5.The sealing plates have four securely laminated GRP lifting handles.