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Why are the seals called "Strife Seal" and "Gleal Ring"?

2026-03-16 00:00

The Staub and Gleason seals are relatively unusual names for sealing elements used in hydraulic cylinders. In stark contrast to these are such terms as: O Shape circle, Y Shape circle, V Shape-combination rings, bud-shaped rings, and the like—named for their distinctive shapes—show clear distinctions.

These two names, which sound uniquely Chinese, actually both originated from the evolution of brand trademark names. After being registered and named by the inventing companies, they gradually became industry-wide common terms.

I. What are the Gle Circle and the Steward Seal?

1 , Gela Circle ( Glyd Ring ): Derived from English Glyd Ring , the original meaning is “ Slip-ring seal ” It was originally created by Xiapan Company ( W.S. Shamban ) Invented and registered to describe its low-friction, slide-friendly characteristics.

2 , St. Fong ( Stepseal ): Derived from English Stepseal , the original meaning is “ Step-seal ” . Because of its PTFE The slip ring has a special stepped cross-section, which enables excellent unidirectional sealing and is thus named accordingly.

These two English names were initially patented trademarks belonging to Baose Xia Ban (now Terexburg), and later adopted by the Hong Kong agent according to... Cantonese pronunciation has been translated into “ Gle Circle ” and “ Stefan ” As the products become more widely adopted, these names have become industry-standard terms and have been incorporated into national standards.

II. Differences and Connections

Grainger seals and S-strips are both common combination seals used in hydraulic systems, made from polytetrafluoroethylene (PTFE). PTFE Slip rings and rubber O Shape circle composition. O The sealing ring provides preload and compensates for wear. PTFE The slip ring ensures low friction, high-temperature resistance, and long service life.

The core difference between the two lies in the sealing direction, which directly determines their application scenarios: