What’s Gasket?

The gasket(another name is washer) refers to the part between the connected piece and the nut. A generally flat metal ring is used to protect the surface of the connected piece from being scratched by the nut and distribute the pressure of the nut on the connected piece.

 

Gasket classification

 

Gaskets can be divided into: flat gasket-C, large gasket-A and C, extra large gasket-C, small gasket-A, flat gasket-A, flat gasket-chamfer type-A, steel structure High-strength gasket, spherical gasket, conical gasket, square inclined gasket for I-beam, square inclined gasket for channel steel, standard spring gasket, light spring gasket, heavy-duty spring gasket, internal tooth lock gasket, internal serrated lock gaskets, external tooth lock gaskets, external serrated lock gaskets, single ear stop gaskets, double ear stop gaskets, external tongue stop gaskets, stop gaskets for round nuts.

 

Flat gaskets are generally used in connectors. One is soft and the other is hard and brittle. Its main function is to increase the contact area, distribute pressure, and prevent the soft texture from being crushed. The basic function of the spring of the spring gasket is to give the nut a force after the nut is tightened, increasing the friction between the nut and the bolt! The material is 65Mn (spring steel), the heat treatment hardness is HRC44-51HRC, and the surface is oxidized.

 

Washer (spring): circlip is an elastic pad or card lock washer to prevent bolts from loosening. The working principle of the lock washer is very simple. It consists of two pieces of washers. The outside is a surface with radial relief, while the inside is a helical tooth surface. When assembling, the inner helical tooth surfaces face each other, and the outer radial convex surface is in a state of engagement with the contact surfaces at both ends. When the connecting part is subjected to vibration and the bolt is loosened, only the relative displacement between the inner helical tooth surfaces of the two washers is allowed to generate lifting tension to achieve 100% locking.

 

Spring gaskets are widely used in load-bearing and non-load-bearing structures of general mechanical products. They are characterized by low cost and easy installation, and are suitable for parts with frequent assembly and disassembly. Spring gaskets are often called spring washers in the screw industry. Its materials are stainless steel and carbon steel, and carbon steel is iron.

 

Selection of gasket material

 

The materials of rubber gaskets are usually NBR (nitrile butadiene rubber), SBR (styrene butadiene rubber), HNBR (hydrogenated nitrile butadiene rubber), EPDM (triple ethylene propylene rubber), SILICONE (silica gel), VITON (fluorine rubber), CR Neoprene), FFKM (perfluoroelastomer), etc.

 

The material of the rubber gasket is NBR nitrile rubber, which is the most commonly used and the most cost-effective. The use of FFKM perfluoroelastomer gaskets is generally in more advanced fields, such as the space rocket field. Because its price is quite expensive, but its performance is excellent, it can exceed many metal materials.

 

Wenzhou Sunthai Valve Co.,Ltd. also provide gaskets, two of which are relatively popular. One is triclamp gasket seal for tri clamp fittings. When you use triclamp fittings, you always need the clamp seals/gasket to seal the pipe connections. They stock different materials,size rubber seals for triclamp fitings and unions. Another is tri clamp gasket. Sanitary tri clamp gaskets are used to seal triclamp connections which are widely in the food, dairy, beverage, biotech, pharmaceutical, and all other sanitary process industries to seal clamp connections in stainless steel pipe lines. If you can communicate with us about the gasket, we will serve you wholeheartedly.