Types of flange gaskets
Leakage is the main form of pipe flange failure, which is related to many factors such as the type of sealing structure, the stiffness of the connected parts, the performance of the seal, operation and installation. The gasket is the main seal of the flange connection, so the correct selection of the gasket is also the key to ensure that the flange does not leak. Let’s take a look at the types and applications of flange gaskets.
Asbestos rubber gaskets
Rubber asbestos gasket is the most used gasket in flange connection, and it can be applied to many media, such as steam, gas, air, salt water, acid and alkali, etc. The thickness of the rubber asbestos mat is not uniform among different professions, usually 3mm thick. For flanges with a nominal diameter of less than 100mm, the thickness of the gasket shall not exceed 2.5mm. The working pressure of the gasket: when it is used for flange connection with smooth sealing surface, it shall not exceed 2.5MPa.Rubber gasket is a gasket made of rubber sheet. It has certain corrosion resistance. It is often used for flange connection of pipelines with a temperature below 60°C and a pressure not exceeding 1.0MPa, and conveying low-pressure water, acid and alkali.
316L spiral wound gasket
Wound gaskets are referred to as wound gaskets for short, and are made of metal steel strips and non-metallic packing strips. The applicable nominal pressure is below 4.0MPa, and the applicable temperature range, the temperature of No. 08 steel can reach 450°C, and the use temperature of the winding mat made of 0Cr13 steel strip can reach 540°C. The thickness of the gasket is generally 4.5mm, and when the diameter is greater than 1000mm, the thickness of the gasket is 6-7mm. The thickness of the positioning ring is about 3mm.
GASKET VCS 900 LB TYPE F TEFLON SEAL MYLAR SLEEVES 1
The tooth pad is made of various metals, and the materials include ordinary carbon steel, low alloy steel and stainless acid-resistant steel, etc., and its thickness is 3 to 5 mm. : The highest nominal pressure can reach 16.0MPa, and it is suitable for parts with high working temperature, such as the toothed pad made of 0Cr13, and its applicable temperature can reach 530°C.
There are many types of metal washers, and there are metal flat washers according to the shape, and the cross-sectional area is oval, octagonal metal washers and lens washers. According to the manufacturing materials, there are low carbon steel, stainless acid-resistant steel, copper, aluminum and lead.
Metallic gaskets
Haihao Group is committed to providing customers with one-stop service. We can not only produce high-quality flanges, elbows, tees and other pipe fittings, but Haihao can also provide customers with accessories used with these pipe fittings, such as: gaskets Sheets, bolts, nuts, pipe caps, etc. To a great extent, avoid the phenomenon of product mismatch during the construction process. If you want to know more related products and services, please feel free to consult us.