| 摘要 |
Piston rod sealing means of the type in which oil is applied to the low pressure side (5) of the seal and used to prevent escape of high pressure gas between the piston rod (6) surface and a surrounding surface of a plastic material gland (12) are improved by providing the gland (12) with a tubular extension (15) of slightly increasing inner diameter in the direction against the high pressure side (4) of the seal. The gland (12) is forced against the piston rod surface, but the tubular extension (15) is not influenced by the force on the gland (12). |
