Compression seals, also known as compression gaskets or compression fittings, are types of seals used to create a watertight connection between two mating surfaces or components. These seals work by applying compression or pressure to the sealing material, typically a rubber or elastomeric ring, to deform it and create a tight seal. Compression seals are widely used in plumbing, piping, and mechanical systems where leak prevention is critical. Here’s how compression seals work and some common applications:

How Compression Seals Work:

1. Sealing Material: Compression seals are typically made of rubber, silicone, EPDM, neoprene, or other elastomeric materials known for their flexibility, resilience, and resistance to fluids and chemicals.

2. Mating Surfaces: Compression seals are placed between two mating surfaces, such as pipe ends, flanges, or fittings, that need to be joined together.

3. Compression Force: When the two mating surfaces are brought together, pressure is applied to the compression seal. This pressure causes the seal to deform and fill any gaps or irregularities in the mating surfaces.

4. Seal Formation: As the seal is compressed, it forms a tight and secure barrier against the passage of fluids or gases. The compression force ensures that the seal remains in place and maintains its integrity over time.

5. Watertight Connection: Once the compression seal is in place, it creates a watertight connection between the mating surfaces, preventing leaks and ensuring the integrity of the system.

Common Applications of Compression Seals:

1. Pipe Joints: Compression seals are commonly used in pipe joints to create watertight connections in plumbing, irrigation, and fluid handling systems. They are used in conjunction with couplings, fittings, or adapters to join pipes of the same or different materials.

2. Flanged Connections: Compression seals are used in flanged connections to create a seal between the flange faces of two pipes or fittings. They are placed between the flanges and compressed when the bolts or fasteners are tightened, creating a tight seal.

3. Expansion Joints: Compression seals are used in expansion joints to accommodate movement, vibration, and thermal expansion and contraction within piping systems. They provide a flexible and watertight seal that allows for the movement of the piping system without compromising the integrity of the seal.

4. Valve Seals: Compression seals are used in valves and valve fittings to create a seal between the valve body and the valve stem or seat. They ensure that the valve operates smoothly and prevents leakage of fluids or gases.

5. Mechanical Couplings: Compression seals are used in mechanical couplings to join two pipes or fittings together. They provide a secure and leak-proof connection that can withstand the pressures and stresses of the system.

Overall, compression seals are versatile and reliable sealing solutions used in a wide range of applications to ensure the integrity and efficiency of piping and mechanical systems. Proper selection and installation of compression seals are essential to achieve optimal sealing performance and prevent leaks.