T18
6Pages

A medium to heavy duty single acting seal, the Hallite 18 has shown itself over many years to be an effective and robust seal in a wide variety of applications. Design The seal comprises a rubberised fabric U form base to which is bonded a rubber energiser. The seal section is pre-loaded by the housing when installed to ensure effective sealing at low pressure. When the pressure increases the rubber energises the U form to increase the sealing area and hence the efficiency of the seal. The strength and durability of the rubberised fabric combines with its ability to retain lubricant keeping friction and wear to a minimum. In a piston application the Hallite 18 should not be used back to back to make a double acting assembly. The range should be fitted to split housings as shown, but sizes marked* can be fitted to a grooved gland housing, if assembled with care. NB: Size lists give "on line" tolerances for rod applications. • The original Hallite fluid seal • General purpose seal • Long life Technical details Operating conditions Maximum Speed Maximum Pressure Figures show the maximum permissible gap all on one side, for rod seals using minimum rod Ø and maximum clearance Ø and for piston seals using the minimum clearance Ø and maximum bore Ø. Refer to Housing Design section. Temperature Range Surface roughness Static Sealing Face – Rod ØD1 Dynamic Sealing Face – Rod Ød1 Dynamic Sealing Face – Piston ØD1 Static Sealing Face – Piston Ød1 Static Housing Faces L1 Chamfers & Radii Groove Section ≤ S mm Min Chamfer C mm rod/piston seals

rod/piston seals - metric

rod/piston seals - metric for piston sealing tolerances refer to technical detail

rod/piston seals - inch

rod/piston seals - inch for piston sealing tolerances refer to technical detail