Product introduction

The packing ring seal, as one of the main sealing forms in the valve seal, becomes an important part of the combined seal in the valve stem and valve seat. The packing seal can be either single or combined. Different types of seals can be selected according to different valve structures. Corrosion resistant, applicable to static sealing parts such as high temperature and high pressure valves.

texture of material

The packing ring of valve stem and valve seat is cut into strips with flexible graphite plate or the flexible graphite braided packing is wound in the mold and pressed into rings of different specifications and sizes. This ring has excellent resilience and stability. It is used together with other end rings. The flexible graphite packing is very stable and reliable even under harsh conditions.

Product features

The packing ring of valve stem and valve seat uses the different densities and tapers of the intermediate ring to maintain a high degree of radial expansion under low loads. This packing ring sleeve also provides a low valve stem friction (25% less than the square section ring). It can be sealed for a long time without continuous compression. The high dimensional adaptability does not require the spring system to preload the packing ring, and is usually used to prevent the leakage of toxic substances; Fire resistant, environmental friendly, with leakage less than 500ppm.

Ordering example