Why X Ring Seals Are Superior To Traditional Designs

Number of hits：92025-07-25 09:24:10　

Some time ago, engineers from a construction machinery manufacturer faced repeated sealing failures. They used O-ring series sealing. Later, they ordered star ring series seals from us and successfully solved the sealing failure problem. Why can star rings solve sealing problems? Let's learn about star ring seals together.

Different standard o-rings, NQKSF is x rings use a 4-leaf geometry and are named because the interface resembles a star. x-rings are double-acting seals with elastic sealing capabilities. The radial or axial contact stress generated by the pre-compression during the initial installation is superimposed with the system pressure to achieve the sealing function. The superimposed sealing force increases with the increase of system pressure. Under pressure, the star seal is like a fluid with high surface tension. It can evenly transfer the pressure to all surfaces

Working parameters:

· Dynamic seal: reciprocating motion: ≤5Mpa. No retaining ring: ≤30Mpa using retaining ring; rotating motion: ≤5Mpa using retaining ring.

·Static seal: ≤5MPa without retaining ring: ≤40Mpa with retaining ring.

Working speed

·Reciprocating motion: ≤0.5m/s.

·Rotational motion: ≤2m/s.

Temperature range

(depends on material and medium).

Nitrile rubber material (NBR): -40℃～125℃.

Fluororubber material (FKM): -20℃～250℃.

Ethylene-propylene rubber (EPDM): -40℃～125℃.

Polytetrachloroethylene (PTFE): -65℃～260℃.

Medium: By selecting materials with different characteristics, it can basically seal all liquids, gases and chemicals at the same time.

Industry-specific solutions

Energy industry applications: In wind turbine pitch control systems, our fluororubber x rings withstand saltwater corrosion in offshore facilities, cyclic loads of more than 500,000 cycles; and extreme temperature fluctuations.

Transportation: For high-speed train braking systems, the EPDM star ring series shows that the compression set is 40% lower than the industry average, the fire performance meets the EN 45545-2 HL3 level, and it is durable.

NQKSF advantage: the combination of technology and service

Our 40,000 square meter smart factory in Xingtai integrates:

Automated detection system with an accuracy of up to 0.01 mm.

More than 6,000 seals are produced on demand.

Real-time performance monitoring through IoT test benches.

▶ Emergency response network: 72-hour delivery of more than 6,000 standard parts.

▶ Joint development program: 14 material engineers assist in custom formulations.

▶ Lifecycle management: Cloud-based seal wear analysis tool.

Looking to the future: Smart seal ecosystem.

x rings seal are widely used, but they are mainly used for dynamic seals, but their use is limited by pressure and speed. Dynamic seals are used to seal reciprocating pistons, piston rods, and plungers. Used to seal swinging, rotating or spiral motion shafts or spindles; static seals are used to seal radially stationary parts, such as sleeves, end caps, and tubes. Seal axially stationary parts, such as flanges, covers, etc.

To learn more, contact NQKSF is technical team to provide you with application analysis services.