Boltrings

Boltrings, also known as o-rings or sealing rings, are mechanical components used to seal joints and prevent leakage in a wide variety of applications. They are typically circular in cross-section and made from elastomeric materials, though other materials like PTFE are also used. The primary function of a boltring is to create a seal between two mating surfaces under compression. When the bolt is tightened, it deforms the boltring, forcing it into the gap and creating a barrier against fluid or gas escape.

The effectiveness of a boltring depends on several factors, including the material composition, the size and shape of the ring, the surface finish of the mating parts, and the applied compression. Different elastomeric materials are chosen based on their resistance to specific chemicals, temperatures, and pressures. Common materials include nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), silicone, and Viton. The selection of the correct boltring material is crucial to ensure a long-lasting and reliable seal.

Boltrings are commonly found in hydraulic and pneumatic systems, automotive engines, plumbing, and industrial machinery. They are a simple yet highly effective sealing solution, offering a cost-effective way to maintain system integrity and prevent contamination. Despite their simple design, the proper installation and selection of boltrings are essential for optimal performance and to avoid premature failure.