one of the cooperating surfaces forming the sealing means

Full Title

Adjustable joints; Joints allowing movement (of the quick-acting type F16L37/50; for double-walled or multi-channel pipes or pipe assemblies F16L39/04 ) > Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction > with partly-spherical engaging surfaces > with special sealing means between the engaging surfaces > one of the cooperating surfaces forming the sealing means