Custom Sealing Rings – Tailored for Your Sealing Needs

Standard off-the-shelf sealing rings work well for many common assemblies, yet numerous machines and systems operate under special pressure, temperature, chemical media or non-standard groove dimensions where generic seals fail to deliver stable performance. This is where custom sealing rings become the reliable choice for hydraulic, pneumatic, automotive, oil & gas, food processing, chemical, mining and heavy machinery sectors.

Custom sealing rings are tailor-made sealing components, not limited to simple O‑ring profiles. We can produce round O-rings, X-rings, V-packing, U-cups, bonded seals and other special cross-sections strictly according to your 2D drawings, 3D files or physical samples. Every parameter including inner diameter, cross-section, hardness, surface finish and tolerance can be adjusted to match your gland design perfectly, eliminating leakage risks caused by poor fit.

Material selection is the core of successful customization. We offer a full portfolio of elastomers and high-performance polymers:

• NBR (Nitrile Rubber): Cost-effective, excellent oil resistance for general hydraulic and lubrication systems
• FKM / Viton: Outstanding high-temperature and chemical resistance for harsh fluid environments
• EPDM: Ideal for hot water, steam, ozone and outdoor weathering conditions
• PU (Polyurethane): Superior abrasion and extrusion resistance for dynamic reciprocating seals
• VMQ Silicone: Wide temperature range, suitable for food-grade and sanitary applications
• HNBR, PTFE and FFKM: Premium grades for extreme corrosion, vacuum and high-temperature working scenarios

Our custom seal service covers the whole workflow: design consultation, material recommendation, mold opening, prototype trial, batch production and quality inspection. Whether you need a small batch for prototype testing or mass production for serial equipment, we control precision tightly and provide relevant material certificates, batch test reports as required.

Compared with standard seals, customized sealing rings bring clear advantages: extended service life, fewer unplanned downtime, lower maintenance cost and consistent sealing stability under extreme working conditions. Instead of modifying your existing hardware to fit standard seals, a custom seal adapts to your equipment, which greatly saves your redesign cost and cycle time.

At Forever Seals, we do not only manufacture sealing parts, but act as your sealing engineering partner. Share your working conditions — operating temperature, pressure, contact media, static or dynamic movement, target lifespan and compliance requirements, and our team will recommend the most cost-effective custom sealing solution for you.

If you are facing persistent seal leakage or cannot find proper standard sizes, custom sealing rings are the practical answer to your sealing puzzle.