How many types of sealing materials are there (which is better)

1. There are several types of sealing materials.

2. What is the seal made of?

3. There are several types and pictures of sealing materials.

4. There are several types of ink return seals made of sealing materials.

1. Seal materials mainly include metal materials, crystal materials, jadeite agate materials, horny materials, stone materials, wood materials and plexiglass.

2. According to the types of textures, metal materials are generally divided into brass seals and copper seals, stainless steel, aluminum and a few lead-zinc alloys.