The clearance seal of gas-liquid booster cylinder is based on the small clearance between the relative moving parts, which is often used in the cylindrical mating pair of plunger, piston or valve. The clearance seal is usually realized by opening several equal distance pressure equalizing grooves on the outer surface of the valve core.

它的主要作用是使径向爪力分布均匀。对减少液漏也有一定的作用。均压槽一般宽0.3~0.5mm，深为0.5~1.0mm。防止圆柱面配合间隙卡紧，同时使阀芯在孔中对中性好.以减小间隙的方法来减少泄漏。同时槽所形成的阻力.与间隙大小有关，对于阀芯与阀孔一般取0.005~0.017mm。
 

Its main function is to make the radial claw force evenly distributed. It also has a certain effect on reducing liquid leakage. The width of the equalizing groove is generally 0.3 ~ 0.5mm, and the depth is 0.5 ~ 1.0mm. To prevent the cylindrical surface with clearance clamping, at the same time to make the spool in the hole to the neutral. To reduce the gap to reduce leakage. At the same time, the resistance formed by the groove is related to the size of the clearance. For the valve core and valve hole, it is generally 0.005 ~ 0.017mm.

这种密封的优点是摩擦力小，缺点是磨损后不能自动补偿.主要用于直径较小的圆柱面之间，如液压泵内的柱塞与缸体之问.滑阀的阀芯与阀孔之间的配合。

This kind of seal has the advantage of low friction, but it can't compensate automatically after wear. It is mainly used for the matching between the cylinder surface with small diameter, such as the plunger and cylinder body in the hydraulic pump, the spool of the slide valve and the valve hole.

玖容密封件采用日本和英国进口密封件，油封与气封采用独特装置，保证了产品零泄漏，产品给客户承诺2年免费保修，极少出现产品返修的情况。

Jiurong seals are imported from Japan and UK, oil seal and gas seal adopt unique devices, which ensure zero leakage of the product. The product promises 2-year free warranty to the customer, and the product is rarely repaired.