DIFF Subgroup
F16J 15/108 Full Title
Sealings > between relatively-stationary surfaces (F16J15/46, F16J15/48 take precedence) > with solid packing compressed between sealing surfaces > with non-metallic packing
F16J 15/108 Sealings > between relatively-stationary surfaces (F16J15/46, F16J15/48 take precedence) > with solid packing compressed between sealing surfaces > with non-metallic packing